I do all my mysterious maps duo.
That being said, all of them are soloable. The issue is mostly that 'what the hell is this' factor. The Morbol binding, the 20 second petrifications, and the Glorious Bombast are all easily overcome, if you know whats coming.
I suggest you just get a buddy to do them with you until you've seen all the maps. There really are not that many. And they are not that bad.
Except for that Bombast. He's totally OP.
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