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