Bio Menace cheats and cheat codes for PC

Become Invincibile for a very short time:
Hold the up arrow at least 2 seconds, then press the down arrow. 

Super Plasma Bolt:
Hold the UP arrow for about 2 seconds until you hear the "charge up" noise. 
Then press the fire key. You'll take a hitpoint of damage doing this.
ÿ
Shield:
Turn left and right in sucession about 6 or 7 times and press the jump key. 
You'll turn a different color, and a shield will appear around you.  
This lasts a VERY SHORT amount of time.

Fireballs:
Turn left and right in sucession about 6 or 7 times and press the fire key. 
You'll take a hitpoint of damage doing this.
ÿ

Hex cheats for immortality, ulimitied bullets & bombs:
Make a backup before proceed.

hex edit bmenace1.exe

Offset 61-64   change 2B 46 08    to 90 90 90
Offset 254-257 change FF 0E 08 44 to 90 90 90 90
Offset 117-120 change FE 0E 0D 44 to 90 90 90 90
Offset 468-471 change FE 0E ED 43 to 90 90 90 90