Boss Fight

I kill 3 zombies and then I can't find anything until I see it. A level 5 Zombie King. I throw a dagger and does nothing. I see it's info and it's vulnerable to guns. I see a revolver on the ground. I run over grab it and let off 6 shots before I'm out. I got the boss down to 100 health. Before I think the monster slammed me with his fist. I see an opening on his back. I leap over him and throw 2 daggers in that spot finishing him off. I go up to levels to L5. From here a portal opens saying second floor. I say nope and go home to take a break. My parents are there. My mom is a L2 and a tag appears next to her name saying Housekeeper. My dad is L1 and his tag is couch potato. My tag is Zombie Slayer.