Here is the full list of all 34 Insanity's Blade achievements.
Bought the 6-way magic daggers!
The taste of true defeat
Go corpse surfing
Set a hostage free
Now you can throw daggers!
Deliver a punishing ball kick!
Throw 'em around!
Skip the How To Play Video
Revisit the How To Play video
You beat the game!
You are an ARCADE MASTER!
Wow! 100% on all your saves!
Get all the pointy things!
Collect all the questy things!
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!
Beat a walking level without crouching.
Rip an arm off 'em!
Pay your dues to the zombie priests
Tear 'em in two!
Beat the game on Casual difficulty
Play singleplayer on the day of love
Play co-op on the day of love
Complete the Arcade adventure!
Reach the max level!
Die in the water
Finish Stage 0 in Hell Mode
Get hugged by a crawler
Get the Cock Puncher
Thurstan gets possessed
Use a continue on Stage 0