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<?xml version="1.0" encoding="windows-1252"?> |
<!-- DFIN ActiveDisclosure(SM) XBRL Schema Document - http://www.dfinsolutions.com/ --> |
<!-- Creation Date : 2022-08-04T21:09:01.6766473+00:00 --> |
<!-- Version : 5.0.1.747 --> |
<!-- Package ID : 3521f3e1fb7a4adbb0298f01b09c20f7 --> |
<!-- Copyright (c) 2022 Donnelley Financial Solutions, Inc. All Rights Reserved. --> |
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| | | </xsd:appinfo> |
| | </xsd:annotation> |
| <xsd:element id="achv_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearTwo" name="FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearTwo" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/> |
| <xsd:element id="achv_OtherAssetsAndRestrictedCash" name="OtherAssetsAndRestrictedCash" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/> |
| <xsd:element id="achv_AccruedLiabilitiesClinicalCurrent" name="AccruedLiabilitiesClinicalCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/> |
| <xsd:element id="achv_SeriesAConvertiblePreferredStockMember" name="SeriesAConvertiblePreferredStockMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="achv_SeriesBConvertiblePreferredStockMember" name="SeriesBConvertiblePreferredStockMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="achv_PreferredStockSharesDesignated" name="PreferredStockSharesDesignated" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/> |
| <xsd:element id="achv_SharesIssuedAsSettlementWithTradeVendorAsNonMonetaryTransaction" name="SharesIssuedAsSettlementWithTradeVendorAsNonMonetaryTransaction" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/> |
| <xsd:element id="achv_AccruedInterestOnSVBConvertibleDebt" name="AccruedInterestOnSVBConvertibleDebt" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/> |
| <xsd:element id="achv_IncreaseDecreaseInGrantsReceivable" name="IncreaseDecreaseInGrantsReceivable" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/> |
| <xsd:element id="achv_IncreaseDecreaseInAccruedClinicalLiabilities" name="IncreaseDecreaseInAccruedClinicalLiabilities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/> |
| <xsd:element id="achv_IncreaseDecreaseInLeaseObligations" name="IncreaseDecreaseInLeaseObligations" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/> |
| <xsd:element id="achv_ProceedsFromAtMarketOffering" name="ProceedsFromAtMarketOffering" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/> |
| <xsd:element id="achv_May2021PublicOfferingMember" name="May2021PublicOfferingMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="achv_SharesIssuedOnExerciseOfWarrants" name="SharesIssuedOnExerciseOfWarrants" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/> |
| <xsd:element id="achv_SharesIssuedOnExerciseOfWarrantsValue" name="SharesIssuedOnExerciseOfWarrantsValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/> |
| <xsd:element id="achv_AdjustmentsToAdditionalPaidInCapitalSharesIssuedThroughAtTheMarketOfferingShares" name="AdjustmentsToAdditionalPaidInCapitalSharesIssuedThroughAtTheMarketOfferingShares" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/> |
| <xsd:element id="achv_AdjustmentsToAdditionalPaidInCapitalSharesIssuedThroughAtTheMarketOffering" name="AdjustmentsToAdditionalPaidInCapitalSharesIssuedThroughAtTheMarketOffering" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/> |
| <xsd:element id="achv_StockIssuedDuringPeriodSharesRestrictedStockUnitSettlementWithheldAndRetiredToTreasury" name="StockIssuedDuringPeriodSharesRestrictedStockUnitSettlementWithheldAndRetiredToTreasury" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/> |
| <xsd:element id="achv_StockIssuedDuringPeriodValueRestrictedStockUnitSettlementWithheldAndRetiredToTreasury" name="StockIssuedDuringPeriodValueRestrictedStockUnitSettlementWithheldAndRetiredToTreasury" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/> |
| <xsd:element id="achv_GovernmentGrantsTextBlock" name="GovernmentGrantsTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/> |
| <xsd:element id="achv_VancouverOfficeOperatingLeaseMember" name="VancouverOfficeOperatingLeaseMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="achv_ScheduleOfSupplementalCashFlowsInformationRelatedToLeasesTableTextBlock" name="ScheduleOfSupplementalCashFlowsInformationRelatedToLeasesTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/> |
| <xsd:element id="achv_WorkingCapitalBalance" name="WorkingCapitalBalance" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/> |
| <xsd:element id="achv_GrantAwarded" name="GrantAwarded" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/> |
| <xsd:element id="achv_GovernmentGrantLineItems" name="GovernmentGrantLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="achv_GovernmentGrantTable" name="GovernmentGrantTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="achv_NationalInstituteOnDrugAbuseMember" name="NationalInstituteOnDrugAbuseMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="achv_ORCAV1ClinicalStudyCostsMember" name="ORCAV1ClinicalStudyCostsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="achv_NationalInstitutesOfHealthMember" name="NationalInstitutesOfHealthMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="achv_ResearchAndDevelopmentExpensesIncreaseDecrease" name="ResearchAndDevelopmentExpensesIncreaseDecrease" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/> |
| <xsd:element id="achv_MaximumRequiredPaymentUnderLicenseAgreementUponCompletionOfVariousMilestones" name="MaximumRequiredPaymentUnderLicenseAgreementUponCompletionOfVariousMilestones" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/> |
| <xsd:element id="achv_UniversityOfBristolMember" name="UniversityOfBristolMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="achv_AmendmentToLicenseAgreementMember" name="AmendmentToLicenseAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="achv_PaymentsUnderLicenseAgreement" name="PaymentsUnderLicenseAgreement" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/> |
| <xsd:element id="achv_MaturityPeriodOfSecurities" name="MaturityPeriodOfSecurities" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/> |
| <xsd:element id="achv_RestrictedCashMember" name="RestrictedCashMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="achv_MaximumMaturityPeriodOfCashAndCashEquivalents" name="MaximumMaturityPeriodOfCashAndCashEquivalents" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/> |
| <xsd:element id="achv_ConvertibleDebtLineItems" name="ConvertibleDebtLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="achv_ConvertibleDebtTable" name="ConvertibleDebtTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="achv_SiliconValleyBankAndSVBInnovationCreditFundVIIILPMember" name="SiliconValleyBankAndSVBInnovationCreditFundVIIILPMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="achv_ContingentConvertibleDebtAgreementMember" name="ContingentConvertibleDebtAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="achv_NonConvertibleTermLoansMember" name="NonConvertibleTermLoansMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="achv_PrimeRateMinusOnePercentageMember" name="PrimeRateMinusOnePercentageMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="achv_BeforeEighteenMonthAnniversaryMember" name="BeforeEighteenMonthAnniversaryMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="achv_AfterEighteenMonthAnniversaryMember" name="AfterEighteenMonthAnniversaryMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="achv_DebtInstrumentMaturityDateExtension" name="DebtInstrumentMaturityDateExtension" type="xbrli:dateItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/> |
| <xsd:element id="achv_ExtendedPercentageOfAggregatePrincipalAmountOfTermLoanAdvances" name="ExtendedPercentageOfAggregatePrincipalAmountOfTermLoanAdvances" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/> |
| <xsd:element id="achv_MinimumMarketCapitalization" name="MinimumMarketCapitalization" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/> |
| <xsd:element id="achv_DebtInstrumentWithdrawalAmount" name="DebtInstrumentWithdrawalAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/> |
| <xsd:element id="achv_MayTwoThousandTwentyOnePublicOfferingMember" name="MayTwoThousandTwentyOnePublicOfferingMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="achv_AtMarketSalesAgreementMember" name="AtMarketSalesAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="achv_GrossProceedsFromIssuanceOfCommonStock" name="GrossProceedsFromIssuanceOfCommonStock" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/> |
| <xsd:element id="achv_UnderwritingDiscountsAndCommissionsAndOfferingExpenses" name="UnderwritingDiscountsAndCommissionsAndOfferingExpenses" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/> |
| <xsd:element id="achv_CommonStockAggregateMaximumOfferingAmount" name="CommonStockAggregateMaximumOfferingAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/> |
| <xsd:element id="achv_ProceedsFromIssuanceOfCommonStockGross" name="ProceedsFromIssuanceOfCommonStockGross" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/> |
| <xsd:element id="achv_CommonStockSharesAvailableForFutureGrant" name="CommonStockSharesAvailableForFutureGrant" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/> |
| <xsd:element id="achv_TwoThousandAndEighteenEquityIncentivePlanMember" name="TwoThousandAndEighteenEquityIncentivePlanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="achv_EmployeesAndConsultantsMember" name="EmployeesAndConsultantsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="achv_BoardOfDirectorsMember" name="BoardOfDirectorsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="achv_NewEmployeeInducementGrantsMember" name="NewEmployeeInducementGrantsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="achv_TwoThousandsAndSeventeenEquityIncentivePlanMember" name="TwoThousandsAndSeventeenEquityIncentivePlanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="achv_TwoThousandsAndTenPerformanceIncentivePlanMember" name="TwoThousandsAndTenPerformanceIncentivePlanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="achv_ShareBasedCompensationMaximumNumberOfSharesAuthorizedToPurchased" name="ShareBasedCompensationMaximumNumberOfSharesAuthorizedToPurchased" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/> |
| <xsd:element id="achv_ClassOfWarrantsOrRightExpirationDate" name="ClassOfWarrantsOrRightExpirationDate" type="xbrli:gYearMonthItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/> |
| <xsd:element id="achv_WarrantsIssuedInSeptemberTwoThousandSeventeenMember" name="WarrantsIssuedInSeptemberTwoThousandSeventeenMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="achv_WarrantsIssuedInJuneTwoThousandEighteenMember" name="WarrantsIssuedInJuneTwoThousandEighteenMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="achv_WarrantsIssuedInOctoberTwoThousandEighteenMember" name="WarrantsIssuedInOctoberTwoThousandEighteenMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="achv_WarrantsIssuedInMayTwoThousandNinteenMember" name="WarrantsIssuedInMayTwoThousandNinteenMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="achv_WarrantsIssuedInDecemberTwoThousandNineteenMember" name="WarrantsIssuedInDecemberTwoThousandNineteenMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="achv_WarrantsIssuedInAprilTwoThousandTwentyMember" name="WarrantsIssuedInAprilTwoThousandTwentyMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="achv_WarrantsIssuedInAprilTwoThousandTwenty1Member" name="WarrantsIssuedInAprilTwoThousandTwenty1Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="achv_WarrantsIssuedInAprilTwoThousandTwenty2Member" name="WarrantsIssuedInAprilTwoThousandTwenty2Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="achv_WarrantsIssuedInAugustTwoThousandTwentyMember" name="WarrantsIssuedInAugustTwoThousandTwentyMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="achv_WarrantsIssuedInDecemberTwoThousandTwentyMember" name="WarrantsIssuedInDecemberTwoThousandTwentyMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="achv_WarrantsIssuedInAprilTwoThousandTwentyFinancingMember" name="WarrantsIssuedInAprilTwoThousandTwentyFinancingMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="achv_ContractualObligationFiscalYearMaturityScheduleLineItems" name="ContractualObligationFiscalYearMaturityScheduleLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="achv_ContractualObligationFiscalYearMaturityScheduleTable" name="ContractualObligationFiscalYearMaturityScheduleTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="achv_LeaseAgreementCommencementDate" name="LeaseAgreementCommencementDate" type="xbrli:dateItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/> |
| <xsd:element id="achv_AreaOfOfficeSpaceLeased" name="AreaOfOfficeSpaceLeased" type="dtr-types:areaItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/> |
| <xsd:element id="achv_OperatingLeaseInitialMonthlyBaseRentExpenses" name="OperatingLeaseInitialMonthlyBaseRentExpenses" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/> |
| <xsd:element id="achv_OperatingLeaseRevisedMonthlyBaseRentExpenses" name="OperatingLeaseRevisedMonthlyBaseRentExpenses" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/> |
| <xsd:element id="achv_OperatingLeaseConstructionAllowance" name="OperatingLeaseConstructionAllowance" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/> |
| <xsd:element id="achv_SeattleOfficeOperatingLeaseMember" name="SeattleOfficeOperatingLeaseMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="achv_PikeMember" name="PikeMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="achv_MonthlyBaseRentalPayments" name="MonthlyBaseRentalPayments" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/> |
| <xsd:element id="achv_MonthlyBaseRentalPaymentsMaximumAnnualIncrease" name="MonthlyBaseRentalPaymentsMaximumAnnualIncrease" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/> |
| <xsd:element id="achv_LeaseSecurityDepositAnnualPayment" name="LeaseSecurityDepositAnnualPayment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/> |
| <xsd:element id="achv_LeaseSecurityDepositYearOne" name="LeaseSecurityDepositYearOne" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/> |
| <xsd:element id="achv_LeaseSecurityDepositYearTwo" name="LeaseSecurityDepositYearTwo" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/> |
| <xsd:element id="achv_LeaseSecurityDepositThereafter" name="LeaseSecurityDepositThereafter" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/> |
| <xsd:element id="achv_RightOfUseAssetsObtainedInExchangeForLeaseObligationsAbstract" name="RightOfUseAssetsObtainedInExchangeForLeaseObligationsAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="achv_IndemnificationExpense" name="IndemnificationExpense" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/> |
| </xsd:schema> |