Alpha v4.1.3: First draft of the second dungeon

Alpha 4.1.3 is here! It's not as polished as I would like it to be, but after being stuck for so long on the Dusty Pancake levels, I figured that it's best to have something out that I can improve later.

Also: the game now supports higher resolutions! You can put the window full-screen and if your monitor is large enough it will display everything at double scale.