Massive, crab-like machines that are slow but devastating. They're capable of shredding shields and dealing massive damage with heavy attacks.
Destroy the canister on his rear, to expose it's weakpoint.
Landmarks and extractions on Dam Battlegrounds are shown above. Open the full Dam Battlegrounds map for loot containers and quest markers.
The BASTION spawns on Dam Battlegrounds, The Spaceport, Buried City, The Blue Gate, Stella Montis and Stella Montis. Spawn points are irregular between raids, so treat the map below as patrol areas rather than fixed positions.
Destroy the canister on his rear, to expose it's weakpoint. It is rated critical threat, so engage it with a plan and an escape route.
The BASTION drops ARC Alloy, ARC Circuitry, ARC Motion Core, ARC Powercell and Bastion Cell.
Destroying the BASTION awards 500 XP, and looting its wreck awards 250 XP.
Killing the BASTION is worth 750 XP and drops worth roughly 5,470 in total.
The BASTION shares its critical threat rating with BOMBARDIER, LEAPER and ROCKETEER. Compare their weaknesses and drops before choosing what to engage.