Here's Moby from Wurm: Journey to the Center of the Earth, an weird Ridley Scott/Metroid-inspired action game from 1991.
Changes (from original gameplay):
• Press A to shoot, B to kick, and Up to jump (jump and kick were reverse in the original game)
• No crouch (CF2.5 is pretty buggy with their older platform engine, so I might switch to the newer engine just to do away with the weird glitches)
• Slightly less gravity
Advantages:
• Jumps high
• Rapidly shoots bullets
• Kicks in the air
Disadvantages:
• No crouch (will probably change soon)
• Low stamina (pretty weak in the original game)