There are eight enemy types in FEAR 3 that you must possess as Fettel.
1. ATC Soldier, light armor - Found on Intervals 01-07.
2. Ghost Soldier - Found on Interval 08.
3. ATC Sniper - Found on Intervals 04 and 07. Wears special camo.
4. Phase Caster - Found on Intervals 02, 05, and 06. Take down his shield first to be able to possess him.
5. Phase Commander - Found on Intervals 05 and 07. Take down his shield first to be able to possess him.
6. Cultist, melee - Found on Intervals 03, 04, and 05.
7. Cultist, ranged - Found on Intervals 03.
8. Cultist, suicide - Found on Intervals 03, 04, and 05. They beep.