Here is the full list of all 34 Insanity's Blade achievements.
Complete the Arcade adventure!
Deliver a punishing ball kick!
Bought the 6-way magic daggers!
Beat a walking level without crouching.
Get all the pointy things!
Die in the water
Reach the max level!
You beat the game!
Get hugged by a crawler
Collect all the questy things!
Thurstan gets possessed
Get the Cock Puncher
Go corpse surfing
Set a hostage free
Rip an arm off 'em!
Now you can throw daggers!
Throw 'em around!
Tear 'em in two!
Skip the How To Play Video
Revisit the How To Play video
You are an ARCADE MASTER!
Wow! 100% on all your saves!
Upgrade Finn's axes to max level!
Play within punching distance!
You like to live dangerously, no saves!
Go through HELL with no saves!
Hey! We thought you liked it rough!
Pay your dues to the zombie priests
Beat the game on Casual difficulty
Play singleplayer on the day of love
Play co-op on the day of love
The taste of true defeat
Finish Stage 0 in Hell Mode
Use a continue on Stage 0