One point of difference with the arcade game is, it was very lenient with the knockback from doors. If you open a door with the knob on your side, and it knocks you into a cat, in the arcade the cat would be knocked out and you keep going. In this remake, if this happens, you lose a life.
It makes the microwave doors much harder to use effectively. I just had a game where every time I died it was due to this!