Here is the full list of all 20 Metal Division achievements.
Kill 1,000 enemies
Play 100 matches in matchmaking
Respawn 1,000 times
Pick up 1,000 boosters
Win in deathmatch gamemode 50 times
Escape damage for 2 minutes with 10% health
Use the power shield to repel artillery shoot
Destroy the enemy and finish the game
Avoid all damage in the game
With low health (less than 20%), destroy 3 enemy tanks in a row
Destroy all enemies once without dying (4x4)
Have 3 active boosters at once
Win a 1x1 match without dying with a score limit of at least 50
Win a 1x1 match without dying with a score of at least 10 at 100% accuracy
Kill the enemy who killed you
Kill the enemy first at the beginning of the game
Get 3 haste boosts without dying
Respawn using all classes in a single match
Finish 1 match in matchmaking mode