Miner not mining?

[Kalise]

(I just sell the maps I do get, since I found early on that the monsters they spawn are impossible to solo.

It depends on the map.

Some maps are designed to be soloed.

But each expansion also has a map that is designed for 8 players to beat.

It even puts a little indicator in the corner of the map after you decipher it telling you the number of players its balanced for.

Of course, the 8 player maps have the best loot, but the single player maps are soloable.