Here is the full list of all 46 Xotic achievements.
The base game contains 34 achievements, and there are 3 DLC packs containing 12 achievements.
Killed 10 enemies with malfunctioning ammunition
Finished all levels of the game in all game modes
Earned a ranking of 5 stars on every level on the Hard difficulty level
Found and destroyed robot heads in at least 5 different levels
Completed all 3 goals with a point multiplier powerup active
Killed 6 enemies in less than 30 seconds
Defeat the Orb and rid the planet of its presence!
Fully upgraded the Hard Hologram Emitter
Destroyed all Scab Plants in a level in a single chain on at least 15 different levels
Landed on 1000 Hard Holograms
Landed on top of a Hard Hologram after a triple jump
Poisoned an enemy and had it infect another enemy
Performed 5 consecutive Fly Kills
Destroyed 5000 Scab Plants
Destroyed all Scab Plants in a level in a single chain
Killed 3 enemies in less than 10 seconds
Performed 3 consecutive Aerial Combos without touching the ground or a Hard Hologram in between
Completed a combat level in The Vanishing City without taking any damage
Killed multiple enemies with 1 shot
Killed an enemy while in mid jump
Killed 50 Skurge Bombers or Spiderlings
Detonated 10 Landmines after triggering their activation sequence
Destroyed 1000 Scab Plants
Killed 50 Turrets
Achieved a chain of 100 Scab Plants
Found and destroyed a blue Crystal Orb Brain
Successfully performed 10 Aerial Combos in one level
Achieved a chain of 50 Scab Plants
Intercepted 10 enemy projectiles out of mid air
Destroyed all Orb Brains in a level
Picked up all Orb Essence in a level that contains more than 50
Successfully performed an Aerial Combo
Destroyed all Scab Plants in a level
Achieved a chain of 25 Scab Plants
Perform a perfect chain with a point multiplier powerup active (requires Pipe Works DLC)
Complete a non-tutorial combat level with at least 95% accuracy (requires Pipe Works DLC)
Complete a Pipe Works level in Scab Attack mode
Defeat a combat level using only the Scorch weapon (requires Pipe Works DLC)
Finish a combat level in Essence Attack mode without firing a single shot (requires Temple Crypt DLC)
Finish a Temple Crypt level in Essence Attack mode
Destroy multiple Orb Brains with 1 shot of the Slayer (requires Temple Crypt DLC)
Finish a combat level without destroying a single Scab plant (requires Temple Crypt DLC)
Complete all 3 goals in a non-tutorial level before killing a single enemy (requires Warp Field DLC)
Turned the Scab meter purple (chain of 25) at least 10 distinct times in a level (requires Warp Field DLC)
Finish a Warp Field level in Brain Attack mode
Destroy a child of a Megabrain before it hits the ground (requires Warp Field DLC)