Here is the full list of all 23 Freedom Fall achievements.
Get the dragon ending.
Complete the game.
Complete the not-guilty path in level 11.
Complete Chainmoor
Kill the shark boss.
Complete Bombard
Buy all the equippable items in the shop.
Kill yourself with a bomb.
Enter a no-boys-allowed zone.
Collect 50 large gears.
Get the solo ending.
Get the princess ending.
Beat the princess in a race section.
Pass a level without dying.
Complete the guilty path in level 11.
Pass the game without dying.
Escape the shark boss.
Get cog, time and death par for all levels
Get under time par for every level
Get under the death par for every level
Get over cog par for every level
Complete game without buying any equipment
Complete the game on Hard mode