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  <xs:element id="mntn_RepaymentOfConvertibleDebtInterest" abstract="false" name="RepaymentOfConvertibleDebtInterest" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mntn_DebtConversionConvertedInstrumentSharesRepurchased" abstract="false" name="DebtConversionConvertedInstrumentSharesRepurchased" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="mntn_DebtInstrumentConvertedInstrumentAmountRepurchased" abstract="false" name="DebtInstrumentConvertedInstrumentAmountRepurchased" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mntn_DebtInstrumentConvertedInstrumentRepurchasedAccruedInterestAmount" abstract="false" name="DebtInstrumentConvertedInstrumentRepurchasedAccruedInterestAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mntn_ClassOfWarrantOrRightMinimumCapitalRaiseRequirement" abstract="false" name="ClassOfWarrantOrRightMinimumCapitalRaiseRequirement" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mntn_ClassOfWarrantOrRightRightsVestedAndExercisable" abstract="false" name="ClassOfWarrantOrRightRightsVestedAndExercisable" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="mntn_ClassOfWarrantOrRightsRequiredPurchaseAmountAsAResultOfAcquisitions" abstract="false" name="ClassOfWarrantOrRightsRequiredPurchaseAmountAsAResultOfAcquisitions" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mntn_ClassOfWarrantOrRightWarrantsExercised" abstract="false" name="ClassOfWarrantOrRightWarrantsExercised" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="mntn_ConvertibleDebtAndEmbeddedDerivative" abstract="false" name="ConvertibleDebtAndEmbeddedDerivative" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mntn_BusinessCombinationContingentConsiderationTransferredEquityInterestSharesIssuedShares" abstract="false" name="BusinessCombinationContingentConsiderationTransferredEquityInterestSharesIssuedShares" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="mntn_A2025IncentivePlanMember" abstract="true" name="A2025IncentivePlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mntn_EmployeeStockPurchasePlanMember" abstract="true" name="EmployeeStockPurchasePlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mntn_PartialRecoursePromissoryNotesMember" abstract="true" name="PartialRecoursePromissoryNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mntn_ContingentEarnoutMember" abstract="true" name="ContingentEarnoutMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mntn_CommonStockVotingRightsPerShare" abstract="false" name="CommonStockVotingRightsPerShare" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="mntn_CommonStockSharesRestricted" abstract="false" name="CommonStockSharesRestricted" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="mntn_ShareBasedCompensationArrangementByShareBasedPaymentAwardPercentageOfOutstandingStockMaximumAnnualIncrease" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardPercentageOfOutstandingStockMaximumAnnualIncrease" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="mntn_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumNumberOfSharesAvailableUnderStockOptions" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumNumberOfSharesAvailableUnderStockOptions" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="mntn_SeriesB1PreferredStockMember" abstract="true" name="SeriesB1PreferredStockMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mntn_SeriesB2PreferredStockMember" abstract="true" name="SeriesB2PreferredStockMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mntn_OptionsAndStockAppreciationRightsMember" abstract="true" name="OptionsAndStockAppreciationRightsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mntn_ShareBasedPaymentArrangementPerformanceOptionMember" abstract="true" name="ShareBasedPaymentArrangementPerformanceOptionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mntn_SignificantShareholderMember" abstract="true" name="SignificantShareholderMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mntn_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardsGrantedExercisePriceMinimumOfFairMarketValuePercent" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardsGrantedExercisePriceMinimumOfFairMarketValuePercent" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="mntn_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardsGrantedExercisePriceMinimumOfFairMarketValueSignificantStockholderPercent" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardsGrantedExercisePriceMinimumOfFairMarketValueSignificantStockholderPercent" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="mntn_ShareBasedCompensationArrangementByShareBasedPaymentAwardSignificantStockholderPercentage" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardSignificantStockholderPercentage" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="mntn_DebtInstrumentIndebtednessCancelledNumberOfIndividuals" abstract="false" name="DebtInstrumentIndebtednessCancelledNumberOfIndividuals" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="mntn_ShareBasedPaymentArrangementPlanModificationCancelledSharesNumber" abstract="false" name="ShareBasedPaymentArrangementPlanModificationCancelledSharesNumber" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="mntn_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfTranches" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfTranches" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="mntn_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsStockPriceHurdle" abstract="false" name="ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsStockPriceHurdle" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="mntn_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantDateFairValue" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantDateFairValue" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mntn_ShareBasedCompendationArrangementByShareBasedPaymentAwardPurchaseAgreementNumberOfIndividuals" abstract="false" name="ShareBasedCompendationArrangementByShareBasedPaymentAwardPurchaseAgreementNumberOfIndividuals" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="mntn_DebtInstrumentIndebtednessCancelled" abstract="false" name="DebtInstrumentIndebtednessCancelled" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mntn_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsReleaseOfSharesDueToLoanForgiveness" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsReleaseOfSharesDueToLoanForgiveness" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="mntn_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsReleaseOfSharesDueToLoanForgivenessWeightedAverageExercisePrice" abstract="false" name="ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsReleaseOfSharesDueToLoanForgivenessWeightedAverageExercisePrice" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="mntn_EffectiveIncomeTaxRateReconciliationEmbeddedDerivativeLiabilityPercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationEmbeddedDerivativeLiabilityPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="mntn_EffectiveIncomeTaxRateReconciliationLossOnDebtExtinguishmentPercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationLossOnDebtExtinguishmentPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="mntn_EffectiveIncomeTaxRateReconciliationExcessCompensationLimitationPercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationExcessCompensationLimitationPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="mntn_DeferredTaxAssetCapitalizedResearchAndDevelopment" abstract="false" name="DeferredTaxAssetCapitalizedResearchAndDevelopment" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mntn_UnrecognizedTaxBenefitsAmountNettedAgainstDeferredTaxAssets" abstract="false" name="UnrecognizedTaxBenefitsAmountNettedAgainstDeferredTaxAssets" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mntn_HadiPartoviInvestmentsLLCAnAffiliateOfHadiPartoviMember" abstract="true" name="HadiPartoviInvestmentsLLCAnAffiliateOfHadiPartoviMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
</xs:schema>
