A Hilarious Doom/Wolf3D Remake
I'm sure Doom mods with various aliens and weapons are a dime a dozen, but shooting food at glow-in-the-dark pigs takes some wacky imagination. Overall very enjoyable, though those who hadn't played Doom or Wolf3D etc as a kid might not appreciate the humour of it all. I haven't played the whole game, but I notice a lot of white walls that looks a little distorted around the corners. Might be due to the choice of colour, or maybe something else, I don't know. Sometimes when the entire corridor is white I can't quite tell where the corners are. I mean, sure you're trying to make it look like Doom, but a little modern-day sharpness in the graphics wouldn't hurt.
A shame that you can't use the mouse as naturally as you would in modern day FPS games, but that's no fault of your own I guess. Keyboard is fine, although I would like to see you implement a "key sensitivity" akin to the mouse sensitivity settings. Using arrow keys to turn is rather painfully slow.
As far as pigs go, seeing a few more varieties would be nice. If you're making them glow in the dark, why not add in a few more colours?