antioch:                kills all enemies
excalibur:              All weapons
igotbetter:             health 100%
knight:                 god mode
mallrocks:              infinite ammo
rabbit:                 shields 100%
rambojet:               gives you a jet
runaway:                fires all weapons at once
shrubbery:              gives you powerups
swallow:                full gas
unladensswallow:        infinite gas

Andrew Hema and Martijn Michiels