Here is the full list of all 17 Trapper Knight, Sharpshooter Princess achievements.
Clear the extra chapter (Hard mode).
Earn all the achievements.
Get Gritz and Leah's bond to Rank A.
Clear the final chapter.
Clear Chapter 19.
Clear Chapter 18.
Clear Chapter 16.
Clear Chapter 13.
Clear Chapter 12 after opening one of the chests.
Clear Chapter 9.
Get a Game Over.
Buy something at a shop.
Clear Chapter 4.
Watch a bonding scene.
Open a treasure chest.
Clear the Prologue
Trap a foe in a Bear Trap.