Here is the full list of all 25 Unspottable achievements.
All players punched by instructor.
All bots killed by bombs.
Punch a player out of the game area.
Use the teleporter 10 times.
2 players were punched in 2 seconds.
Punch the instructor 3 times in the same game.
Complete the tuto.
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.
Punch all bots in start scene.
Bully someone 10 times in start scene.
Punch the spectator in Meadow.
Finish a game with no robots left in Arena.
All players get punched by robots.
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.