Can you have someone else do all the damage and just enter the portal and take advantage of the immunity to achieve the challenge reward?

ium really struggling with this one

Don't think so.

can someone give me advice on a build for taking on the mastermind and uber boss's?

im using a really strong coldsnap/vortex build but even with max res, high block, big dps, and 11k ES... i cant beat ubers

yes, you can.

i think theres some guy(s) in trade 820 offering all mastermind 2 challenges at once, in his syndicate

does the mastermind II challenge need to be done in a minimum map level?

not sure about map lvl but just did all the challenges by accident in a ilvl 70 zone for a guy who wanted kill only /e.(he was in discord and freaked out when he got all challenges at once), it's literally just burst it down and don't stand in anything

This post was edited by Slayerofasz on Jan 23 2019 09:07pm

i was thinking about just getting it back up to 100% and doing it in a lvl like 60 area lol. tear it up ez

Theres tons of people offering this so you must be able to do it any way.

Theres people offering enter tp and get all challenges services.

you need practice not builds