Here is the full list of all 34 CARNAGE OFFERING TD achievements.
Unlock the "+30% Power" Machine gun upgrade
Found the mystery box
Blow up your first barrel
Unlock the "Rebuid" barrel upgrade
Unlock the 3 satellites
Unlock the robot soldiers
Unlock the Goldwing upgrade
Improve the repair field as much as possible
Unlock the "5 mines" upgrade
Unlock the "10 bombs" upgrade
Unlock the "3 missiles" upgrade
Buy all Jake's implants
Buy all Paul's implants
Unlock the "+50% Range" Hammer upgrade
Have 1 million dollars
Improving the power of lasers to the maximum
Improve the range of the Long Range Cannon to the maximum
Increase the critical hit power of the Fusion Mortar to the maximum
Increase the resource reserve of the mining tower to the maximum
Improves the range of the tesla tower to 100%.
Unlocking space depolution
Unlock the Purifier
Unlock Minefield
Unlock "Repair General Automated"
Finding the lost zombie in hardcore mode
Finding the Depressed soldier in hardcore mode
Finding the Satanic witch in hardcore mode
Finding the Screaming crab in hardcore mode
Finding the Contemplative demon in hardcore mode
Finding the Dancing robot in hardcore mode
Finding the Sport reaper in hardcore mode
Finding the Swarming larva in hardcore mode
Finding the Shredder out of order
Finding the Jake's spaceship