Asset pack 4 has been updated with a new Swamp dungeon exterior!  And an additional boss-door floor portrait of an tearful eyeball

The new tiles also have an alternate black-roof version if you want to use them for an interior dungeon! 

(Screenshot uses background assets from the Swamp tileset found in asset pack 2)

This update is free for anyone who already owns this pack so be sure to give it a download!