VoG activity information

I'm trying to analyse the information returned by a `[i]PostGameCarnageReport[/i]` call and I have a few questions that I can't seem to find information about on Wikia. 1) Where can I find information about what enemies are named similar to `[i]R1S1RaidVenus0Major4[/i]`/`[i]R1S1RaidVenus0Major6[/i]`/`[i]R1S1RaidVenus0Ultra0[/i]`/etc? 2) What does `[i]completionReason: 255[/i]` mean? I'm guessing it means the activity was aborted since that's what happened in the activity where I found it, but would appreciate knowing for sure. 3) Am I right in assuming that `[i]activityTreasureChestsOpened[/i]` and `[i]activityVehicleDistanceTraveled[/i]` are new additions (post-HoW)? If so, does `[i]activityTreasureChestsOpened[/i]` specifically refer to Ether chests? Thanks in advance for the help!