[PC] [First person shooter] [Late 90s/Early 00s] Black jumpsuit clad shooter that starts with freefall

Platform(s): PC

Genre: First person shooter, with some strategy

Estimated year of release: Late 90s/Early 00s.

Graphics/art style: Arcade FPS shooter (like 4 quarters at the movie theatre) Alien world or post alien invasion

Notable characters: Playable character in black tactical jumpsuit with pointy headgear (I think female). Possibly played a remake later that had a professor in it as guide.

Notable gameplay mechanics: Full motion run, jump, crouch, sidestep). Remember using a machine gun with second shoot mode as sniper rifle

Other details: Start of the game the playable character is falling sky/atmosphere avoiding fire and enemy aliens also falling. Jumped to base on the ground of top of giant flying ship. I think game was remade because I remember graphics getting better (or we just got a better computer) One item that could be picked up was a decoy that was a crudely drawn picture of playable character on balloon that rolled on squeaky wheels the enemy aliens would shoot at instead of player. I also remember one part where I picked up magnets and ductape to cross a windy or zero gravity section.