Dude...
Not trying to be rude, but if you're going to copy several things directly from another developer (more specifically, from Night at the Gates of Hell such as the zombie faces, the zombie moans/noises, the style of the combat/weapon usage, the elevator jumpscare), you should be giving credit to Jordan King where it is due. At the very least, state, "Elements Inspired from Night at the Gates of Hell by Jordan King", or something like that. The way you copied those things is a bit too blatant to not give some kind of credit or acknowledgement.