Run. Just run. When you hear the clang get your ass in gear, don't try to challenge them (especially with a shotgun )you'll lose. The only thing that has a chance of stopping a sunbreaker is a suppressor grenade (too bad nobody uses defender lol. except me...) or a shadowshot and maybe a nova bomb if you can catch them off guard . [spoiler] In all seriousness though it does need a few hits with the nerfhammer(see what I did there) at the very least put a timer on the cauterize perk so you won't be -blam!-ing immortal. Oh and before the other titans start crying "SHUT UP YOU STUPID HUNTER/WARLOCK!" I main titan too bud. [/spoiler]