Hello Everybody! This is ScratchBuild, a pen-based 2D building engine I made. 1.3.0 is the release version, and I might make more in the future. Enemy 3 will be in update 1.4.0 and torches and lanterns will harm enemies 1 and 2. There Just don't place a block where you are standing or else you'll clip.
thanks to @MatthewZhong for the gravity, it really works well now.