Beat a boss using only the pistol.

Finish the game on Babby or higher.

Finish the game on Normal or higher.

Finish the game on Hard or higher.

Finish the game on 1 CC.

Get a bonus for saving at least five vikings in one stage.

Get an extra life by scoring points

Drive two tanks to the end of the stage in single player mode.

Hold on to the chainsaw until the end of the stage.

Finish a run-n'-gun section of a stage without picking up any items.

Finish a run-n'-gun section of a stage without saving a viking.

Make the timer run out.

Survive without attacking while the drone is on screen.

Destroy the garage door in stage 2 by using only the knife or the pistol.

Get burned, crushed, shot and drenched in acid.

Defeat a boss by using only the knife.

Destroy a flamethrower tank by using only the knife or the pistol.

Defeat the boss battle where you face two adversaries by only damaging one of them.

Beat an on-rails section of a stage without attacking.

Get a bonus for EVERY viking with a fixed location that you can possibly save on an entire stage.

Finish the game in 2-player mode.

Beat a section of a stage in 2-player mode with one player never attacking nor dying.

Beat the easter egg enemy using only the pistol

Beat a boss without using the pistol, knife or grenades

Finish the game while getting a bonus for every possible viking with a fixed location, and without dying.