Roblox Co-Op Horror Game Build

I want a fully playable “Midnight Man” horror experience built from scratch in Roblox Studio, delivered within seven days and within the stated $300 total. The game must run as a co-op multiplayer title (2–6 players) set inside a single, large haunted-mansion map... (Budget: $250 - $750 USD, Jobs: Game Design, Game Development, Game Programming, iPhone, Lua, Mobile App Development, Roblox, Unity 3D)