Here is the full list of all 19 Killer Tank achievements.
First time to battlefield
Kill 50 enemies
Kill 500 enemies
Kill 1000 enemies
Kill 5000 enemies
Killing giant tank for the first time
Killing 50 giant tank
Get Armor Pieces
Get Full Protection
Get Three rapid-fire
Get Fast launch
Get Attack Improve
Get Calling bombing
Get Freezing Trap
Get Accelerate Tape
Get Restore Life
Get Armor-piercing
Use 100 props
Use 500 props