Felt more inspired by Doom than by RoTT or Duke - lacks interactivity to be BuildEngine-like, lacks rooster and ball torture to be RoTT, but has all the elements to be a Doom-like - like a lot of "doom cute" stuff like toilets and benches being part of the level, french fries reminded me immediately of blue flasks. Basically my "doom" instincts kicked in instead of "blood/duke" instincts, and I think that's great. The level felt good, really liked the interconnectivity of it.
As for weapons - shotgun is definitely the best gun, even though it's a bit slow to my liking. At least the animation seems that way - it seems that I can skip the last frame of reload and fire again. Pistols are... Fine for sniping. Not very good otherwise. Dual wield is cool - I guess thats a RoTT reference. Rifle is great at stunlocking enemies, so it makes sense there's not much ammo. Generally I feel like you've placed just the right amount of ammo on the level for pistol-starting. Harpoon-chainsaw is a gimmick, didn't really like it, probably because it takes time to grab an enemy, and that's a death sentence on high difficulty with other enemies roaming around.
Needs "turn off auto weapon switch", 0/10
Good stuff.