Exterminator
Defeat the giant spider



Out of the furnace
Escape the prison



Into the fire
Escape the gauntlet



Freedom!
Escape Slasher's Keep

Curious
Find a secret


This achievement is basically unmissable, you'll unlock it for entering any of the secret rooms, some floors require you to enter a secret room to progress, so you shouldn't have too much trouble unlocking it.


Artisan
Craft an item


Simple achievement, all you need to do is craft an item at the forge which is guaranteed to spawn on floor 3. To craft an item you require either a blade & a hilt or an axe/mace & a shaft, combine them in the crafting menu then rearrange them however you like and craft it to unlock this achievement!


It's like a real RPG!
Complete a quest


You can acquire a quest from one of the talking heads you'll come across every now and then. They give a few variations of quests all of which are quite simple, you shouldn't have too much trouble finishing them.
for example:
- Spike 2 enemies at once 3 times
- Kill 3 enemies with a single explosion
*You can only have 1 quest active at a time, and it will carry over to the next floor.


Good protein
Eat 50 critters


You can unlock this achievement by eating the small bugs that spawn commonly on tables and shelves.


Merciful
Save Ava


After completing the final boss battle Ava will be lying on the ground, to unlock this achievement you need to take her with you when you unlock the door. She takes up a lot of inventory spaces so you'll have to leave a lot of loot behind.


Righteous
Kill Bindrick


To kill Bindrick you need to keep hitting the columns holding up the balcony he's standing on. Once they break he'll die and this achievement is yours.


Once more into the fray
Re-enter Slasher's Keep


Once you've finished the game, if you load the same save file you'll be able to start the game again and unlock this achievement, however you'll retain all of your stats and items and the enemies will be a lot harder.
*If you choose the infinite dungeon the achievement won't unlock


Live to fight another night
Use a prisoner chute.


The prisoner chute can only be found on the 3rd floor and later with the perma death mode enabled. It's a chute that will send you back to the beginning of the game the same way it would if you died on a normal run, this way you can replay early levels and farm items without permanently dying. It's a small room with a chute and a lever, pull the lever to go back to the beginning and unlock this achievement.
*You can select perma death mode after finishing the game at least once

When starting the game you only have the option to play as either a Northerner or an Amazon, the rest of the characters require specific tasks to unlock.
*Unfortunately there seems to be a bug at the moment where sometimes characters and achievements you unlock during the end of the game won't actually unlock even though it says you unlocked them, there's no fix for this yet that I'm aware of. The game should be updated, and this bug fixed soon hopefully.


A gross talisman
Find the lucky monkey paw


To unlock the Sasquatch you need to kill Ava. She's the final boss that dual wields swords. Once you've killed her you'll be able to pick up the monkey paw and this character and achievement is yours.


A monkey's whisper
Find the jade monkey


Unlocking the Undead character is very similar to the Sasquatch, however you need to kill Bindrick, the sorcerer instead of Ava. To kill him you simply need to keep hitting the wooden pillars holding up his balcony, once he falls you can pick up the Jade Monkey and this achievement and Undead will unlock.


A considerable sacrifice
Satisfy the god of blood


The demon is a little bit trickier, to unlock him you need to sacrifice yourself at one of the red altars. They only spawn after you've beaten the game at least once, however it doesn't need to be on the same save file. Unfortunately they're pretty rare.




A regular everyday human person
Let yourself be consumed


This character is the hardest to unlock, it requires you find an 'energized slime sample' and an 'energized acid sample' in the same run, these are only dropped by the blue and green slimes. If you're lucky enough to have both samples, once you get to the library levels you can find a brewing stand which you can interact with and combine the samples, once combined you'll acquire a potion, and once you drink it you'll turn into the Jelly-man and unlock him for future runs (as well as this achievement!)

To complete the storyline achievements you need to beat the final boss by any means as that character.


Brother!
Complete the northerner storyline



Lovers in a dangerous dungeon
Complete the amazon storyline



Monkey business or whatever
Complete the sasquatch storyline



Rise in peace
Complete the undead storyline



Excelsior!
Complete the demon storyline



A real human being and a real hero
Complete the jellyman storyline

*Dungeon archetypes can only be changed after you've beaten the game once.
**Finishing an infernal dungeon will unlock all of the other dungeon achievements, so don't bother trying to do them one at a time.


Life sentence
Enter an infinite dungeon


This achievement is very simple. All you need to do is load up an infinite dungeon, you don't actually need to play it.


I'm too young to die
Escape a small dungeon


This achievement is unmissable as you'll unlock it from finishing your first playthrough I just thought it fit better here.


Hey, not too rough
Escape a medium sized dungeon


Medium sized dungeons are dungeons with a depth of anywhere between 16 - 25 floors.


Hurt me plenty
Escape a large dungeon.


Large dungeons are dungeons with a depth of anywhere between 26 - 35 floors.


Ultra-violence
Escape a deep dungeon


Deep dungeons are dungeons with a depth of anywhere between 36 - 45 floors.


Nightmare!
Escape a frightening dungeon


Frightening dungeons are dungeons with a depth of anywhere between 46 - 55 floors.


Dungeon runner's high
Escape a marathon sized dungeon


Marathon sized dungeons are dungeons with a depth of anywhere between 56 - 65 floors.


Through hell and back
Escape an infernal dungeon


Infernal dungeons are dungeons with a depth of anywhere between 66 - 70 floors.