Hit [Tab] to pause the game, then enter one of these :
 
 ocellaris1q : Change levels, up/down arrow to change level
 ocellaris1l : Player 1 extra life
 ocellaris1h : Extra health
 ocellaris1f : Fireball shots
 ocellaris1z : Laser shots
 ocellaris1n : Napalm shots
 ocellaris1m : Missle shots
 ocellaris1s : One shield
 ocellaris1c : One c-bomb shot
 ocellaris2l : Player Two (same as above, replace 1 with a 2)