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