IT"S A WALL OF FLESH AND SOULS | Spooky's Jump Scare Mansion: HD Renovation 

HEY HEY HEY YOU DID THE THING! Yes, Specimen 9 has an exclusive deathscreen in this game that's not in OG, which is why I wanted you to see it. Also I find it hilarious that at the end you ended up getting TAKEN again unintentionally. As a pro-tip, always pause the game if you need to stand still. Unlike in OG, Specimen 9 will still kill you if you're moving your camera or even swinging your axe if you keep standing in the same spot for long enough without moving (like you did in the video), so be careful. However, because you did that secret, I'll tell you about a secret that I can promise you won't get you killed and is a lot more interesting. Next time you find the cat-dos, if Specimen 9's entry is on there, you can do something with it. Basically, if you press MODIFY_HOUSE_LAYOUT 6 times, and then spam Specimen 9's entry until it opens, you'll see a bunch of secret cat-dos entries, with one of them that reveals some lore about Specimen 9's boss form and showcases some other secret specimens. Also here's a fun fact about the pink cat, is that it's getting a new 3D model in the next major update coming in a month. Also Specimen 7 is based on Giygas from Earthbound, not Terraria despite the similarity.

Wall of flesh like from terraria 🐲