Here is the full list of all 67 Ultratron achievements.
Player has fired 100000 shots in a game
Held one or more pets for 20 levels without dropping
Drone survived 30 levels
Drone survived 20 levels
Double three way bouncy max power rapid fire gun
Vanquished 10000 enemies
30 kills with a single grenade
Double three way bouncy bezerk gun
Shooty pet levelled up to maximum
EMP shocked 50 enemies in one blast
Laser pet levelled up to maximum
Rocket pet levelled up to maximum
Killed 1000 enemies with grenades
Detonated 10 bombfruits
Smartbombed 50 enemies with one blast
Single drone shot down 100 enemy bullets
Collected 50 fruits
Killed 500 enemies with grenades
Quantum-shifted through a boss
Vanquished 5000 enemies
20 kills with a single grenade
Defeated two bosses
Beat a level without firing a single shot
Held one or more pets for 10 levels without dropping
Player has fired 10000 shots in a game
Defeated Letum
Maximum droid power
Maximum drone upgrades
Maximum dot slurp range
Upgraded all pets to maximum parameters
Upgraded rocket pet to maximum
Killed 100 enemies with grenades
Defeated Lues
Detonated 25 smartbombs in a single game
Maxed turbo power and recharge
Single drone vanquished 250 enemies
Collected 25 fruits
EMP shocked 25 enemies in one blast
Vanquished 2500 enemies
Grenade add-on upgrades maxed
Awesome double three way bouncy gun
Upgraded laser pet to maximum
Defeated Bellum
Smartbombed 25 enemies with one blast
Upgraded shooty pet to maximum
Got 100% on a dodge stage
10 kills with a single grenade
Drone survived 10 levels
Survived assault level without taking damage
Held one or more pets for 5 levels without dropping
Got 100% on a challenge stage
Maximum shields
EMP shocked 10 enemies in one blast
Collected 10 fruits
Consumed 10 consecutive fruits
Collected 1000 dots
Vanquished 1000 enemies
Defeated Ieiunitas
Smartbombed 10 enemies with one blast
Full complement of smartbombs
Collected 500 dots
Vanquished 500 enemies
Maximum score multiplier
Player has fired 1000 shots in a game
Collected 250 dots
Collected 100 dots
Vanquished 100 enemies