(Your role/story can be whatever, I'm tryna going for a Re-Animator approach)

It was late and you were on your way home until you past by the house that was owned by the secretive but friendly Edgar Grimson. There were some muffled yelling coming from his home, and since his front door was halfway open, you couldn't help but think that maybe someone broke in and is now hurting Mr. Grimson. You immediately ran up to the door and investigate his warm but spooky looking home, until there was loud bumping sounds coming from the basement.

You slowly make your way down the steps to see not only a large laboratory, but you see Mr. Grimson being attacked by what seems to be a zombie. How will you save him?