Pretty good. I was surprised to see a realistic shotgun in this type of game.
Kick wasn't listed in the controls on the title screen and it's crucial (for ammo gathering). Portals should be way easier to find. As it is finding it feels like it takes like 40%+ of playtime. There isn't that much time to read item descriptions during combat, I wonder if it should have a prompt with a pause, or those should appear at the end of the level. Portals could also need a button prompt to activate, not only are they hard to find, they are also easy to walk onto accidentally. Items are also hard to see in the levels, especially when everything is littered with bodies.
Unless you are going for very long playtimes with elaborate builds, 5% penalties to stats don't feel significant enough. A small defense penalty means nothing when you can receive massive damage killing you quickly. As opposed to that there are some amazing items with good twists, like exploding enemies and falling rocks.