Endoparasitic

Three limbs ripped off, infected with a deadly parasite, you must save your research. Drag yourself through the corridors of a secret research lab on a remote asteroid, fight off horribly mutated monsters, inject countless syringes of vaccines, and survive at all costs.
Endoparasitic is a tactical survival horror game where you must manually do every action from reloading to moving. Juggle movement and firing and plan room entrances to avoid getting swarmed.
Features:
One handed in game, one handed in real life: Everything is mouse-controlled
Guns are manually loaded one bullet at a time
Your healthbar is a parasite burrowing to your brain
Stealth sections
Puzzles
Story and characters
Various mutated monsters to fight
Boss fights
Four guns