Full list of all 23 Wuppo: Definitive Edition achievements.
The base game contains 23 achievements, and there are 3 DLC packs containing 0 achievements.
Beat the game on hard mode or higher
Beat the game on insane mode
Beat All Boss Run mode under 25 minutes on normal or higher
Defeat the Dustboss by using the Breft2000 suit during All Boss mode
Does Drekel have a shower?
Find and defeat all bosses
Find and watch all filmstrips
Buy all gumgumgun upgrades at Betty's gumgum shop
Exterminate 800 kneft
Complete your first Boss Run
Buy Tein Taatseb's helmet during All Boss mode
Help Raab start his blarb smoothie business
Defeat Stoplight in All Boss Mode without getting hit
Make an unlikely friend
Personalize your gumgumgun's colours
Hijack and vandalize a Popo City tram
Upgrade all weapons in the game to their full potential
Use the practice mode to fight the fish
Complete the game
Obtain a Popo Chipcard
Completely cover yourself in dirt
Achieve maximum happiness
Complete the Boss Run without items from Tein or Raab's stores on normal or higher