Sauce War

Singleplayer:

Move: WASD
Shoot: Space

Multiplayer:

Mustard:

Move: WS
Shoot: X
Shield: Z

Ketchup:

Move: ↑↓
Shoot: ←
Shield: →

Rules:

There can be maximum 3 shots per player on the scene
The shields have only 3 lives
The backfire intensity depends on your shield timing