Here is the full list of all 25 Unspottable achievements.
Punch an opponent under a spotlight.
Use the teleporter 10 times.
Punch the spectator in Meadow.
Punch all bots in start scene.
All bots killed by bombs.
Complete the tuto.
2 players were punched in 2 seconds.
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.
Bully someone 10 times in start scene.
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.
All players killed by bombs.
Punch the instructor 3 times in the same game.
All players punched by instructor.
Punch a player out of the game area.