While playing a game, enter one of the following codes to activate the 
corresponding cheat function:

Result - Cheat Code
God mode option on cheat menu - dogmode 
String Input option on cheat menu - kinput 
Enemy shot control - pianist 
Infinite shield control - stoneskin 
Infinite boost control - boooost 
Infinite Flux Beam ammunition - reflux 
Infinite Phase Shift Cannon ammunition - greens 
Infinite Hellfire ammunition - firecrackers 
Infinite Titans Hammer ammunition - nails 
Infinite Magma Cannon ammunition - volcano 
Infinite Electronic Laser ammunition - lightning 
Infinite Stasis Cannon ammunition - staystill 
Infinite Sonic Cannon ammunition - listener 
Infinite Plasma Cannon ammunition - bloody 
Infinite ammunition for all weapons enabled - stormfire 
Infinite ammunition for all weapons disabled - getridof 

Level select -
Enter one of the following names at the new game menu to advance to the 
corresponding level:

Level - NAME
2 - MAYDAY 
3 - VICTORY 
4 - CHALLENGER 
5 - AZIMUTH 
6 - REVEALED 
7 - STONEAGE 
8 - WARFARE 
9 - OXYGEN 
10 - SKYHIGH 
11 - SUNSHINE 
12 - BLOWUP 
13 - NEUFTROIS 
14 - BARACUDA 
15 - GIVEAWAY 
16 - WATERFALL 
17 - SEVENTEEN 
18 - NEARTHEEND 
19 - Y2K