Here is the full list of all 58 PewDiePie: Legend of the Brofist achievements.
Defeat 25,000 enemies.
Defeat Barrel King on Pug Mode.
Complete all levels on Pug Mode.
Defeat Falcon Lover on Pug Mode.
Defeat Snowbarrel on Pug Mode.
You defeated General Barrel on Pug Mode!
Complete 1 level on Pug Mode.
Defeat Barrel King on Bro Mode.
Complete all levels on Bro Mode.
Buy all Attacks.
9001 Brocoins in your pocket.
Defeat Falcon Lover on Bro Mode.
Defeat Snowbarrel on Bro Mode.
Defeat 10,000 enemies.
Buy all Defenses.
Buy Duck.
Defeat General Barrel on Bro Mode.
Collect all 50 patches.
Defeat Barrel King on Hard Mode.
Complete all levels on Hard Mode.
Defeat Falcon Lover on Hard Mode.
Defeat Snowbarrel on Hard Mode.
Buy Cryaotic.
Finish a stage on your last heart with 0 companion.
Defeat a T-Rex.
Defeat a Yeti.
Defeat a Illuminati.
Defeat General Barrel on Hard Mode.
Complete all levels on Easy Mode.
Watch the credits after beating the game.
Defeat Barrel King on Easy Mode.
Share complicated love and affection with a male.
Collect 40 patches.
Die 100 times.
Jump on 7 Enemy before touching the ground.
Defeat Falcon Lover on Easy Mode.
1000 Brocoins in your pocket.
Collect 30 patches.
Buy Jacksepticeye.
Defeat 1000 enemies.
Collect 20 patches.
Die 25 times.
Buy CinnamonToastKen.
Defeat Snowbarrel on Easy Mode.
Collect 10 patches.
Jump on 5 Enemy before touching the ground.
Die 10 times.
Buy Markiplier.
Defeat 301+ enemies.
Jump on 3 Enemy before touching the ground.
Defeat General Barrel on Easy Mode.
Defeat 100 enemies.
Defeat a Unicorn.
Die for the first time.
Buy Marzia.
100 Brocoins in your pocket.
Defeat 10 enemies.
Defeat your 1st enemy.