Late to the party, I just got the Underdome DLC. Yeah I know, it blows compared to the other DLCs, but I still want the achievements.
 
Problem is, I play alone as a 50 Soldier, and this place is handing my ass to me. I'm playing on second playthrough, and I *barely* got through the 5 rounds of Hell-burbia, and now doing Angelic Ruins I keep getting slaughtered by the Guardian wave in the 2nd round. I'm getting worried that the later achievements are next to impossible to solo with the difficulty already this brutal. Should I just play through the DLC with a character on first playthrough, or just grind my teeth? Also, any good location for an awesome shock weapon to use against those damn Guardians?
 
Cheers.

If you're on consoles, go splitscreen, level 10 character to host, level 50 character for second player. Enjoy the DLC with everything at level 10.
 
I did it at 50 with a full group and it's very long and tedious.

im having the same problem. goddamn underdome.

I didn't really have this problem since I played as a siren. I could just go invisible and regen health, maybe take a med kit while invisible if needed. I only died once in the first 3 domes, then my console broke, so I'll have to do it again and I'll probably do it co-op this time.

"Not fun, just torturous tedium.  But if you must, split it w/a low lvl host like suggested above, or get some modded gear that makes it less redic. "

HAHAHAHA GOOD LUCK me and Starfoxa started doing these challenges for the S-rank back in January and only managed to finish early july