Story has similarities to the cancelled Half-Life: Omicron Redshift.

But this one has some Doom 3 and Alien stuff in it, until it turns into Doom later on.

FPS Guild, The Table of Arceus' Judgement, Argent-Type and Sentinel-Type Pokemon, and UAC's Pokemon Unit belong to me
Pokemon belongs to Nintendo Company Limited and Game Freak
Doom belongs to ID Software
Alien belongs to Ridley Scott