Here is the full list of all 51 No More Heroes 3 achievements.
Unlock all achievements
Acquire all DeathGlove Chips
Clear the game on Carolina Reaper difficulty
Beat all bosses on Death difficulty
Clear all Defense Missions
Clear all Defense Missions with Rank S or higher
Clear all Defense Missions with Rank SS or higher
Beat all bosses with Rank SS or higher
Beat all bosses with Rank S or higher
Beat 51 Mass-Produced Destroymen
Take the tutorial in the Tutorial Room
Plant seeds at all greenification points
Destroy all alien shells
Clear Episode 10: Friends
Clear the game on Spicy difficulty
Acquire all DeathMan cards
Collect all Alien capsule toys
Acquire all scorpions
Rescue all kittens
Find all Doppelgangers
Move 100km on bike
Play DeathMan
Clear Episode 9: Flesh & Blood
Clear Episode 8: Loyalty
Upgrade everything on the Skill Tree
Clear Episode 7: Crosshairs
Clear Episode 6: Hell
Move 30km on foot
Collect all Assassin capsule toys
Unlock all save points
Collect all Battle Recreation capsule toys
Beat Ryuichi
Clear Episode 5: Dead Cannon
Succeed in playing catch with Jeane 10 times
Enter the motel Gacha Room
Fly on your bike 20 times
Perform 100 wrestling moves
Clear Episode 4: Sorrow
Clear Episode 3: Memory
Unlock all DeathGlove skills
Pull off a 99-hit combo during battle
Buy all types of takeout sushi
Perform a successful Perfect Dodge 50 times
Clear Episode 2: Space
Match up the slots 30 times
Transfer ranking battle registration fee via ATM
Equip a DeathGlove Chip
Change your clothes
Clear Episode 1: Darkness
Save on the toilet
Speak to Sylvia