Depends on the rift level, but generally I'll at least run until I find the the exit portal. At T1 I melt mobs pretty fast. All I usually need to do is cast locusts once and move on. The mobs just die behind me from DoT while I search for elites and the exit portal.
Just realized the link I posted above had notes on 2.1 as well. Not overly interested in tiered rifts. I think that really only benefits T6, since if I really wanted tougher rifts, I could just slide the difficulty bar up. But ladders sound like fun! A good reason to start from scratch. All xp at the end of the season gets transferred back to your main too.
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