"Destroy BNK-3R" is an objective in the story mission Where Angels Fear to Tread.
Walkthrough[edit]
Immediately head for where BNK-3R took off from. At the top of the waterfall you will find a handy chest. Use it to get a nice weapon. This thing is a beast of a foe to deal with and you want to find some cover that can be used reliably throughout the fight.
BNK-3R has a number of attacks that you will need to worry about. It has mortars, lasers and auto turrets on its underside. Listen for Brick's call outs as he will let you know when Mortar fire is incoming at least.
Here is where you want to use that precision Corrosive-Type damage. It is still a big machine which means you can do the most damage with the corrosive weapon you brought. Focus onto its weak points (the red light under its nose and above it) and it will be a bit easier of a fight. It is still very hard even knowing what is going on. From the Water fall area you can safely snipe it for the whole battle and scarcely take any damage at all. Just watch out for Loaders that come up the stairs.
When you get the BNK-3R low on health it will change its pattern. It will start to hover on the Northern end of the platform and just fire its laser. It is reduced in power so it will not instantly kill you anymore so be grateful. Just focus firing on BNK-3R from the steps leading to the Waterfall. It will not be much longer before the robot bites the dust.
Dialogue[edit]
As the BNK-3R reveals itself:
Handsome Jack: "Do you really think I'd protect Angel with nothing but a couple of bots and some flimsy turrets? See, you're not at the bunker right now. The bunker isn't a place. THAT'S the bunker. Meet the BNK-3R, the greatest defense bot ever built. Designed her myself. Now do me a favor and die."
Brick: "Oh CRAP! The bunker went airborne, slabs - this is gonna get messy!"
When BNK-3R first uses the Death Ray:
Brick: "Holy crap - that ... is a big-ass gun."
Brick: "It's charging it's big-ass weapon!"
