Here is the full list of all 14 Intrusion 2 achievements.
Harpoon mech FTW
Shake Shake
Find the Relic
Get sword mech to the end
Get rifle mech to the end
Defeat the MACE
Complete game on high difficulty
Burn enemies
Smash enemies
Get the stalker trapped
Defeat them
Feed the fish
Defeat the Grabber
Perform headstomp