Here is the full list of all 28 Mech Rage achievements.
Upgrade shield to level 4.
Collect all upgrades.
Get rid of the evidence.
Upgrade ammo capacity to level 5.
Destroy 500 crates.
You've been naughty and used cheats.
Die in tutorial.
Destroy 300 barrels.
Destroy Alien Gateway.
Win game on hard difficulty.
Win Command Deck level.
Upgrade dash to level 4.
Kill 10 Hive Mother aliens.
Upgrade armor to level 5.
Kill 240 Grunt aliens.
Win Main Deck level and destroy Scorpion Boss.
Upgrade speed to level 4.
Win Hub level and destroy Sentinel boss.
Give Mysterious Contraption a go.
Win Engineering Deck II level.
Kill 300 Rascal aliens.
Kill 1000 enemies.
Win Engineering Deck I level.
Win Storage Deck II level.
Kill 500 Kamikaze aliens.
Find upgrade hidden in weird place…
Win Storage Deck I level.
Win Hangars level.