Yeah, the game was just experiment with stuff I've seen in Construct, thus everything from physix to some rts movement, a bit of random stuff, particles..just learning this way what can be done.
Due to that, the game itself is very inefficient, horribly I may say as I had no idea how to do some things so I had to come up with 'workarounds' for every problem which in turn might have bloated up the whole thing. Just like those things you mentioned like getting stuck at the wall and disappearance.
Inspiration- SciFi/Horror B movies...Stalin...messer chups, zombies.
I'll PM you the cap but be aware of two things-
Gfx are all done in Graphics Gale, using the tablet (makes things easy). Simply draw a shape and fill with flat darkest color. Select lighter color than previous than draw inside the shape again and repeat the process about two to three more times depending on how many gradients or variations of the same color you want/need (I usually go for 4).
Use dithering in between two colors to 'smooth' them up if needed. Just go from dark to light, makes things that much easier. Oh, and Zoom In frequently.