Arc Barrier + Spike Drive/Phoenix Pod/Flash Barrier = EZ MODE
Arc barrier feels like dead hard but only with a 8.5 seconds cooldown and grants you bonus invulnerability if you achieved a perfect block. That's so crazy it makes brutal, dangerous and normal outposts easy mode. If you want it even easier, pick one of the 3 aforementioned gadgets with the arc barrier and then you'll laugh your ass off at killbox outposts.
Grappling hook works with Arc Barrier so the game is a breeze.