Here is the full list of all 29 Double Dragon: Neon achievements.
Win an airlock battle without attacking
Max out a single song to level 50
Beat every level as a Ro-bro
Expose the twin bulbs simultaneously
Become the hidden idol!
Break all of the Skullmageddon monitors in the Rocket Dojo
Hit Skullmageddon with a hair pick
Befriend everyone's most favoritest helpful character!
View all pages of the concept art gallery
Defeat Skullmageddon!
Dodge and get the Gleam 50 times
Collect one of each mix tape song
Use every weapon once
Upgrade a song at the Tapesmith
Grab an enemy out of the air 10 times
Grab two enemies at once!
Knock Abobo into a pit
Knock Williams into a pit
Catch a boomerang thrown by your bro!
Defeat an enemy by unlocking his potential
Complete any level without taking any damage
You got 50000 on Double Dragon!?
Defeat 4 enemies with a single bat swing!
Nail all enemies with the hair pick
Complete any level in co-op without taking any damage... with friendly fire enabled!
Complete the game without using any Sosetsitsu!
Finish every stage cooperatively on Double Dragon difficulty with friendly fire enabled!
Max out every song to level 50!!
Finish every stage solo on Double Dragon difficulty!