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