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