Glad you're enjoying the game!
You're not the first person to contact me about playing with two players, so yes, I have some co-op ideas in mind for the game. Unfortunately, I don't have anything playtested and ready, but here are some untested, draft rules for playing with two players:
For every two "non-boss" enemies spawned, listed in order on the app, choose one of the following:
* Double the health of the first enemy OR
* Spawn another version of the furthest enemy adjacent to the nearest enemy, and drop a coin in its space.
For every "odd man out":
* Double the health of the enemy and drop a coin in its space.
For every "boss" (any enemy with special rules or which acts as a quest target):
* Increase the health of the enemy by half again, rounded up, and drop a coin in its space.
Coins represent ancillary treasure that can be picked up if you are adjacent to them as a long action. They are one bulk and are worth 1 treasure back in town; imagine an appropriate treasure. At the end of an adventure, divvy up the treasure as you see fit between your heroes who survive.
So, for instance, if you enter a room with the following enemies:
* A skeleton archer
* Two skeleton warriors
* A wight
* Two gravedigger beetles
...then you would:
* Pair the skeleton archer with the first skeleton warrior and either double the health of the archer or spawn an extra skeleton with a coin. (In the latter case, if the archer is closer, then you'll spawn a warrior next to it, and if the warrior is closer, then you'll spawn an archer next to it.)
* Pair the second skeleton warrior with the first gravedigger beetle (since the wight is a "boss") and either double the health of the warrior or spawn an extra enemy with a coin (if the warrior is closer, spawn a beetle next to it, or if the beetle is closer, spawn a warrior next to it).
* Since the last gravedigger beetle is "odd man out", double its health and drop a coin.
* Increase the wight's health by half again, rounded up, and drop a coin there.
If you try playing with these rules, be sure to drop me a line and tell me how it goes. Eventually, I hope to get the option to select a number of heroes in the companion app, and have it generate rooms with appropriate difficulty, but I want to make sure I have the solo difficulty balanced first!