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