Batch to executable software is notoriously unreliable, consider using "iexpress" which is completely free and in fact comes with windows. That aside, what a peculiar "engine" you used! You included the source files, which was not necessary, and it let me get an idea of how the game was built. So, by the looks of it, and the fact that "WLUWGameEngine" doesn't come up in google at all, it would seem that you made this entire engine specifically for this game using only SDL2. For 48 hours that's absolutely crazy. I can't wait to see what kind of stuff a diligent programmer like yourself could make with a more capable engine, and more time!