Sudden Death is a new special round that was added in ALPHA stage. The special round is similar to Elimination, and is one of the few special rounds to change the game's function. The game starts with the Alive & Dead team similar to Elimination, and the player has 1 life. All minigames are normal speed, and there's only 8 rounds in total. Winning a round on this special round will give you the Hardcore badge and the Hardcore Trophy. The game goes on until everyone is dead, or until a boss round ends.
- Focus on the game, as you have to survive for 8 rounds.
- Try to complete a minigame as if it was on high speed, even though all minigames are normal speed.