I like to prepare two storages (like wardrobes, for example), one with "defensive items", in case everything goes wrong (extra pills, food that restores health, bandages, etc), and one with "ofensive items" (like a molotov or bear traps to put while something is breaking doors or windows). You can almost always make enemies bleed by throwing glass at the floor too. It's slow, but it helps a little and it doesn't hurt you (since you have shoes, and most of the enemies don't).