Here is the full list of all 10 Prey: Typhon Hunter achievements. It takes around 12-15 hours to unlock all of the achievements on Windows.
You won 50 matches as Morgan.
You won 50 matches as a mimic.
You killed 3 mimics within 20 seconds after picking up a Psychoscope Chipset.
You killed a mimic within 15 seconds of match start.
You won a match as Morgan using only the wrench.
You picked up 50 unique objects that aren't mimics.
You mimicked 50 unique objects.
You won the round by knocking Morgan out with a mimic attack as time expired.
You successfully killed Morgan while mimicked as a weapon.
You survived an entire match without mimicking anything.