Last night I came across the Crumbling Vault event while playing my level 19 Witch Doctor solo, (well, the Templar was with me, but yeah...) and I failed it, hard. For the first 30 seconds or so, I tried killing things, but past that point I was pretty much just using Spirit Walk and moving as fast as I could to find the treasure room.
However, I was frequently overwhelmed by enemies, and often surrounded. I managed to survive to the end of the timer, and I feel like I might have been close to the end, but there's really no indication so I have no idea.
Are there any tricks to getting through this? Would particular bits of gear or types of skills help? Is there anything in particular I should be looking for as far as clues that I'm on the right track? Is this even possible to solo?