Here is the full list of all 18 SoulHunt achievements.
Win 10 games as a hunter
Win 50 games as a hunter
Win 100 games as a hunter
Win the game as a candle.
Get to the chandelier.
Win 5 games without losing health
Win 10 games as a hider
Win 50 games as a hider
Win 100 games as a hider
Kill 100 hiders
Kill 500 hiders
Kill 1000 hiders
Kill 10 seekers
Kill 50 seekers
Kill 100 seekers
Win 10 times as a poop
Win a round without possessing any prop
Win a round by possessing only big objects (have the object for at least a minute)