Here is the full list of all 32 SOUTH PARK: SNOW DAY! achievements.
Defeat 10 Vampire Kids.
Damage an enemy in your Event Horizon using your own projectile.
Use Cheesy Zombies on a Necro.
Revive an ally with a Cheesed Necro.
Defeat Stan within 25 minutes of starting your run.
Start a run with someone who has Socially Transmitted Distraction. They say it started in a lab out in California somewhere.
Defeat Cartman without damaging any stationary decoy.
Find and activate every Rulebook across an entire run, and live to tell the tale.
Finish a map with one extra Rulebook applied.
Toot on an enemy faction leader while dead.
Dance while reviving an ally.
Acquire an Ultra-Legendary Upgrade.
Fart on 3 Assassins using Fart Escape.
Make at least 4 enemies Vomit with no more than 1 second in between each.
Relieve the buildup of natural pressures in the gastrointestinal tract through quick, albeit semi-musical, bursts of gaseous release.
Defeat Mr. Hankey.
Kill 50 Pooplets in one battle.
Increase the rarity of 10 upgrades to Rare or better.
Kill an enemy with an aerial attack after floating with Moon Jump for at least a second.
While Invisible, defeat a human boss with a melee attack.
Defeat Cartman in the foothills.
Defeat Liane at the church.
Kill an Ent with Bleeding damage.
Defeat Stan at the playground.
Become an honorary Marshwalker.
Kill 3 enemies with cannonballs.
Set 4 or more enemies on fire with no more than 2 seconds in between each.
Defeat Princess Kenny at the Town Square Ampitheater.
Heal 150 points of damage with a single Healing Totem across any number of allies.
Defeat 10 enemies with weapon strikes from the air.
Defeat Kyle in his sacred grove.
Acquire a Legendary Upgrade.