Strategy:Gothic armor

(version 0.9.9.4) Gothic armor provides a lot of protection, but the movement speed is a huge penalty. You can greatly mitigate this with Hellrunner and an agility mod. Best used for temporary heavy firefights that you cannot seek cover from, as opposed to leaving it on at all times. The knockback reduction prevents rocketjumping as well.

Another very interesting use, with Whizkid (2), is the cerberus armor assembly. This will give you the benefit of all resistances, and a much less severe movement penalty, while keeping the 200% durability. Note that you will lose the 6 protection. A power mod afterwards would probably be best, but agility is fine too.