Here is the full list of all 29 HeartZ: Co-Hope Puzzles achievements worth 1,000 gamerscore.
Play and finish an act with a friend
Kill one of those big fat Vbots. They deserve it.
Play and finish an act on your own
Had you going, huh? Right to the end.
Finish the adventure
Kill a friend by farting
Follow Vince-var-A until Nylus shows up
Save Vince-var-A from his cell
First time the Protopulse is attracted by a Tesla
Restart a room
Use the Protopulse for the first time
Play and finish an act with two friends
Act cleared
Be gently mocked by the achievements system
We can't find an excuse to give you three medals!
First use of a switch. An achievement that only has nostalgia value.
Very good question...
Finish an act, collect all the statues, and complete all its challenges
Finish an insane number of rooms
Take control of a Vbot
Rach Vince-var-A's jungle lab
Get all of the parts for Vince-var-A's machine
Finish the adventure. For real.
Finish the game (story/statues/challenges) in 1P/2P/3P
Collect all the statues
Win your first challenge
Win all the challenges
Bark loudly to wake up any sleeping Vbots
Defeat Nylus without giving him enough time to charge a single Protopulse