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