If you are looking to simply connected Google Analytics, check out this article.
With our Advanced mode in Google Analytics you can pull any metric from your Google Analytics account.
When you are creating or editing your Google Analytics integration simply toggle "Advanced Mode" on.
You'll also be able to customize how frequently you'd like the data pulled in and give it a new Name.
We will support the following metrics from Google Analytics:
USER
ga:users
ga:newUsers
ga:percentNewSessions
ga:sessionsPerUser
SESSION
ga:sessions
ga:bounces
ga:bounceRate
ga:sessionDuration
ga:avgSessionDuration
ga:uniqueDimensionCombinations
ga:hits
TRAFFIC SOURCES
ga:organicSearches
ADWORDS
ga:impressions
ga:adClicks
ga:adCost
ga:CPM
ga:CPC
ga:CTR
ga:costPerTransaction
ga:costPerGoalConversion
ga:costPerConversion
ga:RPC
ga:ROAS
GOAL CONVERSIONS
ga:goalXXStarts
ga:goalStartsAll
ga:goalXXCompletions
ga:goalCompletionsAll
ga:goalXXValue
ga:goalValueAll
ga:goalValuePerSession
ga:goalXXConversionRate
ga:goalConversionRateAll
ga:goalXXAbandons
ga:goalAbandonsAll
ga:goalXXAbandonRate
ga:goalAbandonRateAll
PAGE TRACKING
ga:pageValue
ga:entrances
ga:entranceRate
ga:pageviews
ga:pageviewsPerSession
ga:uniquePageviews
ga:timeOnPage
ga:avgTimeOnPage
ga:exits
ga:exitRate
INTERNAL SEARCH
ga:searchResultViews
ga:searchUniques
ga:avgSearchResultViews
ga:searchSessions
ga:percentSessionsWithSearch
ga:searchDepth
ga:avgSearchDepth
ga:searchRefinements
ga:percentSearchRefinements
ga:searchDuration
ga:avgSearchDuration
ga:searchExits
ga:searchExitRate
ga:searchGoalXXConversionRate
ga:searchGoalConversionRateAll
ga:goalValueAllPerSearch
SITE SPEED
ga:pageLoadTime
ga:pageLoadSample
ga:avgPageLoadTime
ga:domainLookupTime
ga:avgDomainLookupTime
ga:pageDownloadTime
ga:avgPageDownloadTime
ga:redirectionTime
ga:avgRedirectionTime
ga:serverConnectionTime
ga:avgServerConnectionTime
ga:serverResponseTime
ga:avgServerResponseTime
ga:speedMetricsSample
ga:domInteractiveTime
ga:avgDomInteractiveTime
ga:domContentLoadedTime
ga:avgDomContentLoadedTime
ga:domLatencyMetricsSample
APP TRACKING
ga:screenviews
ga:uniqueScreenviews
ga:screenviewsPerSession
ga:timeOnScreen
ga:avgScreenviewDuration
EVENT TRACKING
ga:totalEvents
ga:uniqueEvents
ga:eventValue
ga:avgEventValue
ga:sessionsWithEvent
ga:eventsPerSessionWithEvent
ECOMMERCE
ga:transactions
ga:transactionsPerSession
ga:transactionRevenue
ga:revenuePerTransaction
ga:transactionRevenuePerSession
ga:transactionShipping
ga:transactionTax
ga:totalValue
ga:itemQuantity
ga:uniquePurchases
ga:revenuePerItem
ga:itemRevenue
ga:itemsPerPurchase
ga:localTransactionRevenue
ga:localTransactionShipping
ga:localTransactionTax
ga:localItemRevenue
ga:buyToDetailRate
ga:cartToDetailRate
ga:internalPromotionCTR
ga:internalPromotionClicks
ga:internalPromotionViews
ga:localProductRefundAmount
ga:localRefundAmount
ga:productAddsToCart
ga:productCheckouts
ga:productDetailViews
ga:productListCTR
ga:productListClicks
ga:productListViews
ga:productRefundAmount
ga:productRefunds
ga:productRemovesFromCart
ga:productRevenuePerPurchase
ga:quantityAddedToCart
ga:quantityCheckedOut
ga:quantityRefunded
ga:quantityRemovedFromCart
ga:refundAmount
ga:revenuePerUser
ga:totalRefunds
ga:transactionsPerUser
SOCIAL INTERACTIONS
ga:socialInteractions
ga:uniqueSocialInteractions
ga:socialInteractionsPerSession
USER TIMINGS
ga:userTimingValue
ga:userTimingSample
ga:avgUserTimingValue
EXCEPTIONS
ga:exceptions
ga:exceptionsPerScreenview
ga:fatalExceptions
ga:fatalExceptionsPerScreenview
DOUBLECLICK CAMPAIGN MANAGER
ga:dcmFloodlightQuantity
ga:dcmFloodlightRevenue
ga:dcmCPC
ga:dcmCTR
ga:dcmClicks
ga:dcmCost
ga:dcmImpressions
ga:dcmROAS
ga:dcmRPC
ADSENSE
ga:adsenseRevenue
ga:adsenseAdUnitsViewed
ga:adsenseAdsViewed
ga:adsenseAdsClicks
ga:adsensePageImpressions
ga:adsenseCTR
ga:adsenseECPM
ga:adsenseExits
ga:adsenseViewableImpressionPercent
ga:adsenseCoverage
AD EXCHANGE
ga:adxImpressions
ga:adxCoverage
ga:adxMonetizedPageviews
ga:adxImpressionsPerSession
ga:adxViewableImpressionsPercent
ga:adxClicks
ga:adxCTR
ga:adxRevenue
ga:adxRevenuePer1000Sessions
ga:adxECPM
DOUBLECLICK FOR PUBLISHERS
ga:dfpImpressions
ga:dfpCoverage
ga:dfpMonetizedPageviews
ga:dfpImpressionsPerSession
ga:dfpViewableImpressionsPercent
ga:dfpClicks
ga:dfpCTR
ga:dfpRevenue
ga:dfpRevenuePer1000Sessions
ga:dfpECPM
DOUBLECLICK FOR PUBLISHERS BACKFILL
ga:backfillImpressions
ga:backfillCoverage
ga:backfillMonetizedPageviews
ga:backfillImpressionsPerSession
ga:backfillViewableImpressionsPercent
ga:backfillClicks
ga:backfillCTR
ga:backfillRevenue
ga:backfillRevenuePer1000Sessions
ga:backfillECPM
DOUBLECLICK BID MANAGER
ga:dbmCPA
ga:dbmCPC
ga:dbmCPM
ga:dbmCTR
ga:dbmClicks
ga:dbmConversions
ga:dbmCost
ga:dbmImpressions
ga:dbmROAS
DOUBLECLICK SEARCH
ga:dsCPC
ga:dsCTR
ga:dsClicks
ga:dsCost
ga:dsImpressions
ga:dsProfit
ga:dsReturnOnAdSpend
ga:dsRevenuePerClick
You can also reference the Google Analytics explorer here: https://developers.google.com/analytics/devguides/reporting/core/dimsmets#mode=api
(*note: we will be also working on supporting Dimensions in the future)