/vr/ - Retro Games

>>5336027
Brigador is actually pretty good top-down shooter, in the veins of that SNES Mechwarrior game,

>>5335971
You havent really described what exactly it is that you want to do, only one health mechanic, which is really not enough to get the picture.
Do you want to make new levels?
Do you want to make new enemies?
If so then you won't be able to just extract res from the game - it may look like 3D models due to lighting and so, but it is in fact a light/heightmapped sprites, made in isometric view and would not look right in a first person view.
And making the assets on your own would be hard enough of a task, so at that point you might as well make something completely new, not derivative from someone else's work.