Damn, you made my first code useless :P :
Note: With this code on, you'll be untouchable by projectiles. Enemies can still hit you in hand-to-hand combat.
One Hit Kills
Note: These five addresses seem to cover all enemies, but I haven't tested throughout the entire game.
90 - Crouched and shooting
8E - Small jump forward
8D - Running
I'm too lazy to find the other values...
Some kind of position mod
78 - Character flips upside down, feet to the ceiling, and can walk on the ceiling. Causes some strange room transitions to occur as well.
There are other values that cause various other effects, most of which end in a glitch/freeze.
I may be lazy, but I can...zzzZZZzzzZZZzzzZZZ...