Here is the full list of all 14 Neon Chrome achievements.
Stop the Overseer 1.0.
Play 20 levels without dying.
Defeat the hovertank.
Defeat the centipede.
Kill 1000 enemies.
Defeat the spiderbot.
Finish a normal level without using abilities, weapons or melee.
Finish a normal level in under 20 seconds.
Finish a normal level without being seen.
Kill 8 enemies with a single explosive.
Kill 3 enemies with a single railgun bullet.
Upgrade a stat to level 100.
Complete all special levels.
Unlock all unlockables.