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