Here is the full list of all 79 Scarlet Tower achievements.
Defeat Vorax
Survive 1 full day in Endless Mode
Buy something exclusive to Infinite Mode from the Seller
Slain World Eater on Corruption 10 Leviathan's Lair.
Win 5 matches using only magic weapons.
Collect 5 Equipment Banish in a single run
Win the Plaguelands Map in Corruption 9 with the Undine Familiar.
Win the Plaguelands Map in Corruption 9 with the Salamander Familiar.
Win the Plaguelands Map in Corruption 9 with the Hoot Familiar.
Slain World Eater on Corruption 10 Plaguelands.
Collect 100 pieces of food
Slain World Eater on Corruption 10 Nightpine Valley.
Beat Corruption 10 with the Knife of Darkness in your Arsenal
Slain Octopus on the Ocean.
Slain Angler Fish on Ocean.
Defeat more than 100,000 enemies
Win the Plaguelands Map in Corruption 9 with Vylat.
Win the Plaguelands Map in Corruption 9 with Veromus.
Defeat 1000 Brains in the Plaguelands
Complete the Necromancer Quest
Win the Plaguelands Map in Corruption 9 with Rhys.
Collect 1000 blood gems.
Help the Engineer
Complete the Paladin Quest
Win the Plaguelands Map in Corruption 9 with Ninn.
Complete the Elementalist Quest
Win the Plaguelands Map in Corruption 9 with Lyah.
Win the Plaguelands Map in Corruption 9 with Lance.
Complete the Templar Quest
Complete the Alchemist Mission
Complete the Priest Quest
Win the Plaguelands Map in Corruption 9 with Allure.
Win the Plaguelands Map in Corruption 9 with the Jinn Familiar.
Complete the Bloodmancer Quest
Complete the Blacksmith Quest
Defeat 30 Silver Werewolf
Defeat 800 Snowman
Beat Corruption 9 before 22 minutes.
Buy the 12 different flasks from the secret seller.
Slain Flesh Demon on Plagulands.
Create 10 different weapon fusions.
Buy 30 flasks from the secret vendor.
Defeat Krampus
Search for the lost egg in the world.
Defeat 500 Tentacles
Defeat 100 Carnivorous Plants
Defeat 500 Slimes
Defeat Puker 5x at Night Time.
Upgrade Thunder Staff to Rank V.
Defeat Death at Corruption Level 1 or higher
Survive for 24 minutes.
Survive for 24 minutes at Woods of Havoc.
Upgrade Glacial Staff to Rank V
Defeat 5.000 Enemies at Night Time.
Upgrade Holy Bible to Rank V.
Find someone lost in the woods at nighttime.
Defeat 1000 Ghost Witches
Survive for 15 minutes.
Defeat Puker at Night Time
Defeat 300 Ghost Witches
Defeat 100 Goblins
Defeat 30 Slimes
Defeat 100 Zombies
Survive for 2 minutes.
Survive for 5 minutes.
Survive for 12 minutes.
Upgrade Frost Staff to Rank V
Upgrade Fire Staff to Rank V.
Defeat 300 Red Bees at daytime.
Win a match without taking damage.
Beat Corruption 3 Without Take any Damage.
Defeat Vorgron
In Endless Mode, make it until nightfall without taking damage
Beat the Scarlet Tower in Corruption 10
Collect 20 Re-roll dice in a single run
Defeat 1000 Pink Jellyfish in Leviathan's Lair