The Medieval Fantasy Characters as well as the Pixel Monsters Vol.1 are perfect for a dungeon side crawler!
This Dungeon tileset has a view from the top, but any chance you could sell a pretty much the same thing but from a side crawler perspective? The art seems to go well together with the characters pack if I'm not mistaken.
Nothing fancy, just a straight line with various backgrounds chunk to be randomized and repeated. Exactly re-using what's in this pack: wall with just bricks, with some moss grass, with lava cracks, spider webs... and something for the ground level.
All three would be an insta-buy on my end!
Thanks!