I recently replayed this highly underrated game and modded it along the way until it did things the way I wanted it. In general it makes most bodies stay, scorch marks stay as well while glow effects fade correctly. Same goes for acid and slime from hidergun and crab grenade. I created permanent stains for these after the glow fades. This mod is built on top of SikkMod lite 1.2 for Prey, which I included in the download. It should be working without it as well though.
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