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