Here is the full list of all 25 Unspottable achievements.
All players get punched by robots.
Punch a player out of the game area.
All players punched by instructor.
2 players were punched in 2 seconds.
All bots killed by bombs.
Bully someone 10 times in start scene.
Punch the spectator in Meadow.
Punch all bots in start scene.
3 players were punched in 2 seconds.
Complete a 1 point game.
Complete a 99 points game.
Unlock all characters.
Win a game without any opponents scoring any points.
Draw a game.
Complete the tuto.
Finish a game with no robots left in Arena.
Leave the restaurant during your distract.
All the players got punched as they were about to leave.
All players have been crushed.
All players have been punched when the lights were off.
Turn off the light 10 times in a game.
Punch an opponent under a spotlight.
All players killed by bombs.
Punch the instructor 3 times in the same game.
Use the teleporter 10 times.