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