Full list of all 138 Ring of Pain achievements.
The base game contains 71 achievements, and there are 5 DLC packs containing 67 achievements.
Pacify 25 Hounds
Equip 8 different Head slot items in one playthrough
Reach the boss with less than 20% health remaining
Play 7 Daily Dungeons
Defeat the Owl on Hard difficulty
Die 250 times
Complete a run without any Epic or Legendary items equipped
Complete a run in under 18 minutes
Reach Depth 12 on Hard difficulty
Killed by equipping items
Dig up an item in the Graveyard
Complete a run 5 times
Have 60+ Speed
Die in Hard Mode
Complete a Daily Dungeon
Unlock 70 Achievements
Get a score of over 9000 in a Daily Dungeon
Have 60+ Clarity
Complete a run after travelling down a deep pit
Have 60+ Defense
Have 100+ max Health
Reach Depth 12 having killed all creatures on the way
Spend 100+ Souls with Soul Spill
Complete the Light Ending
Kill a Shrieker
Have 5 creatures explode in one turn
Stealth past 10 Banefangs
Kill 10 creatures with reflect damage
Play the game for 10 hours
Die to a boss
Kill a Wretched Amalgam that has 50+ max health
Reach Depth 6 without attacking a creature
Reach depth 6 without drinking any potions
Get cursed by potions 3 consecutive times
Complete the Dark Ending
Have 60+ Attack
Deal 99+ damage in a single attack
Successfully Stealth past 100 different creatures
Have 500+ Souls
Choose your final path
Reach the boss on maximum health
Kill 1000 creatures
Reach a depth of 12
Kill 20 different types of creatures in a single game
Shuffle 10+ times in a single run
Poison 10 Banefangs
Successfully Stealth past 10 different creatures in a single game
Attack Owl friend
Kill 20 Scroungers
Kill multiple creatures in a single turn 50 times
Poison 50 creatures
Die 25 times
Kill a Pupper
Reduce your max health to 1 with the Fountain of Life
Parry 50 creatures
Exit a room without attacking any creatures
Die with Rainbow Socks equipped
Have a full inventory
Kill a Bilebag from a distance
Transform 20 creatures
Reach a depth of 6
Discover 10 new paths
Kill 100 creatures
Use a Shrine
Deal 25+ damage in a single attack
Kill a cute, harmless frog
Go from full Health to 1 Health in a single turn
Die within 30 seconds of starting a run
Freeze 50 creatures
Discover a new path
Complete the Tutorial
Kill 10,000 creatures
Kill a Stone Shifter in Hard Mode
Finish the game without using any scrolls or spellbooks
Intimidate 250 creatures
Kill 10 Fire Breeds with an explosion
Accept 100 items from Owl
Teleport or knockback an explosive creature 50 times
Poison 300 creatures
Make a wish
Freeze 200 creatures
Kill an Ancient Ice Beast which has more than 30 Defense
Complete a run without replacing any equipped items
Complete a run without using any rerolls
Have 20 Poison on yourself
Complete a run without ever equipping an Epic or Legendary item
Hex a frog
Complete a run with 4 or fewer items equipped
Complete a run without ever equipping a Rare or Epic item
Kill Sam and spare the companions
Heal 50+ with one potion
Kill 10+ creatures in one turn
Complete a run without ever equipping a Common item
Complete a run with 5 or less max Health
Complete a run with 0 or less Attack
Complete a run with 0 or less Defense
Complete a run without discarding any items
Have 2000+ Souls
Hit Owl with a spoon
Get Poisoned twice in one turn
Get hit by 20 explosions in one run
Kill a Spineback while its spines are exposed
Petrify 50 creatures
Use 35 Exit cards of any type in a single run
Complete a run without ever equipping any Body, Head, Arms, Legs or Feet items
Reroll 30 times in a single run
Complete a run without entering any special dungeons (only use the black exits)
Destroy 20 equipped items in one run
Reach Depth 12 on Medium difficulty
Complete a run with the first item equipped
Transform a Firebead that was about to self-destruct
Kill all enemies in a dungeon with the rock
Reach depth 10 without hurting a Gnawling
Escape fatal poison damage by leaving dungeon
Get cursed while at 1 health
Complete a run with only Brute items equipped
Complete a run without gaining any stats from Stat Boosts
Complete a run without killing a Scrounger
Complete a run with only Multiclass items equipped
Complete a run without taking any explode damage
Complete a run with only Stalker items equipped
Kill a creature with exactly the same stats as you
Survive a total of 60+ damage in a single Nest or Swamp dungeon
Complete a run with only Diviner items equipped
Kill a boss without any items equipped
Complete a run with your Stealth, Crit and Dodge chance lower than 10%
Complete a run with only Soul Kin items equipped
Kill a boss without ever attacking them directly
Spend more than 200 Souls rerolling a chest and then discard it
Kill all creatures in a core path dungeon on the first turn
Wear items of the same set in the Head, Body, Legs, and Feet slots