Here is the full list of all 46 Super House of Dead Ninjas achievements.
Achieve a 6 minute speed run or less on "Ninja".
Collect 100 treasures
Reach the bottom of Abarghus' Domain on "Ninja" difficulty.
Score 1 million points in Ninja mode.
Create 4 custom costumes
Die 1000 times
Score 500,000 points in Ninja mode.
Complete Transdimensional Leakage on "Ninja" difficulty.
Achieve a 6 minute speed run or less on "Hard".
Collect 15 tickets
Score 2,000,000 points in a single game
Score 1,000,000 points in a single game
Complete Boss Rush on "Ninja".
Kill 100 enemies with magic in a single game
Score 500,000 points in a single game
Complete the game on "Ninja" difficulty, starting from the roof.
Beat the game in under 7 minutes
"Off with their heads!"
Run through Transdimensional Leakage without killing any mushrooms
Kill 50 enemies with bombs in one game
Kill 20 enemies with bombs in one game
Collect nine hearts in one game
Complete Boss Rush on "Hard".
Kill Disgust
Kill Horror
Beat the game on Hard / See the True Ending
Have a conversation with 10 ghosts in one game
Beat the game without ever using bombs
Beat the game without ever using projectiles
Beat the game without ever using magic
Beat the game with Chaos Mode active
Complete the game with the One-Armed Ninja.
Score 250,000 points in a single game
Kill Torment
Kill Rage
Play at least 10 custom levels
Descend 50 floors without killing anything
Publish a Custom Map
Kill Abarghus
Defeat the One-Armed Ninja
Kill 5 enemies with bombs in one game
Kill Doom
Kill 100 enemies in a single game
Achieve Rage five times in one game
Kill Spite
Kill 50 enemies in a single game