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