Games like Quake: Episode 5 - Dimension of the Past

If you finished Quake: Episode 5 - Dimension of the Past, the closest matches are Trepang2, Aliens: Fireteam Elite, Scathe, Run Like Hell: Hunt or Be Hunted and The X-Files: Resist or Serve. All 8 share its shooter genre and are ranked by how closely their themes and modes overlap.