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