If you want to clear it out w/o cheesing it:
1) Have a level 3 party of 4
2) You can avoid having everything decend on you by preventing gobos from getting to war drums EXCEPT Gut, she just calls out.
3) Ask to talk to gut privately (after getting brand if you want to use absolut gear) and use the wyvern poison you got from nettie to 1 shot her
4) For Minthara, just make sure no gobbo gets to the drum.
5) For the gobo chief, fight from the rafters above.
General combat guide:
https://forums.larian.com/ubbthreads.php?ubb=showflat&Number=722075#Post722075
