If you're playing the "I have all the levels of hell to find cool gear" game, cerberus also goes well if you apply it to ballistic vest, duelist armor, or gothic armor, all of which have 50% resistance to the categories cerberus doesn't touch. Though at that point you probably want to take a lot of TaN and/or hope you find an onyx mod to put on the completed non-invulnerable armor. (I feel like gothic must be best for this, but I haven't found any in a long time.)
1. "I have all the levels of hell to find cool gear" is Archangel of 666. I guess Ao100 is kinda like that, but I'm also playing on UV. But yes.
2. Yeah, I'm not getting TaN anytime soon. I'm building Cateye Dualgunner (despite the last 10-so floors have been nothing but me blasting an assault shotty, stupid game), and Cateye blocks TaN, Brute, and Reloader. So much for that. I do, however, have a P-modded Duelist Armor...
What I should probably do is focus on getting offensively-geared up first before focusing on defense. Or maybe not. I have such limited experience on UV it's kinda dumb that I decided to attempt UV 100 instead of something sensible. (UV AoLT? heh)