A 3D environment concept built in Blender and additional polish in Photoshop, original monster (skeleton base) and bathroom are models from Sketchfab:
https://sketchfab.com/3d-models/the-bathroom-free-d5e5035dda434b8d9beaa7271f1c85fc
https://www.artstation.com/marketplace/p/3nly/3d-pack-draped-skeletons-2-cloth-skeleton?utm_source=artstation&utm_medium=referral&utm_campaign=homepage&utm_term=marketplace