Managing two high-tech evil lairs by myself can get a bit much, so I checked out what the fans came up with under unhelpfully nondescript names.
Solo Mode **
This attempt at a quadruple solo dungeon seemed to be well thought through on digital paper, but didn't work in practice. Since it was specifically designed for the first game (and removing some incompatible cards even then), this might have been the fault of the more interactive Boss Monster 2 cards in the mix, but it's a hassle to separate the decks now.
Solitary Rules with Heroes Abilities ***
A streamlined solution that puts rival bosses' spells in the hands of the harder Heroes and works as well with the combined game, though it's necessary to make more fiddly adjustments to keep it from being way too easy at the start, even with the items from the mini expansion, and most of the game feels fairly pointless until the Epic Heroes come out later. I played it a few times, then went back to regular Me1 vs Me2.
