First things first: please post your roster.
yep that helps the most when asking for help , cuz tbh the only reply i had for OP is that i just run my 5 best geared champs for DT bosses 10-20-30 .. after that i have to change it up !
Without knowing Op's champs its hard to say if my reply wouldve been rude or not
I mean, first and foremost, by far your biggest problem is your lack of level 60s. Doom Tower isn't really intended to be done with level 50s, let alone level 40s. There are some fights you can cheese your way through, but by and large they require full teams of 60s.
For Bommal specifically, you'll probably be best off just using Burangiri solo. The gear requirements are quite reasonable for the earlier stages. See this:
I would also recommend Burangiri and the link above. For me, he did all the Bommal stages on Normal Doom Tower and through stage 50 Bommal on Hard Doom Tower.
If you can't make those stats, perhaps you can have better luck farming the Templar from campaign and doing a Solo Templar build.
I know, I'm working on leveling commons to five, it's not difficult, but not fast either.
Lol, I doubt I'll get to 50 any time soon, but thanks for the tip.
One last question, what a good equip set for Burangiri? Regen, maybe?
Right. Btw, I did fine last month with the ones I have. This one is just... Wrong.
Edit: Huh, so that's how you pronounce that guy's name....