A few utilities for triggering google analytics events from within Unity.

GoogleAnalytics.cs

using UnityEngine;

public class GoogleAnalytics  {
    public static string gameIdentifier = "YourGameName";
    
    public static void TrackEvent(string eventName, string eventLabel="") {
        string googleAnalyticsCall = "_gaq.push(['_trackEvent', '" + GoogleAnalytics.gameIdentifier + "', '" + eventName + "'";
        
        if(eventLabel != "") {
            googleAnalyticsCall += ", '" + eventLabel + "'";
        }

        googleAnalyticsCall += "])";

        Debug.Log("Google analytics call: `" + googleAnalyticsCall + "`");
        Application.ExternalEval(googleAnalyticsCall);
    }

    public static void TrackEventWithValue(string eventName, string eventLabel, int eventValue) {
        string googleAnalyticsCall = "_gaq.push(['_trackEvent', '" + GoogleAnalytics.gameIdentifier + "', '" + eventName + "'" + ", '" + eventLabel + "', " + eventValue + "])";
        
        Debug.Log("Google analytics call: `" + googleAnalyticsCall + "`");
        Application.ExternalEval(googleAnalyticsCall);
    }
}