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