Honestly, the Last Resort hotel is a mess. You’ve got a plumber who’s terrified of his own shadow, a ghost dog that’s more interested in treats than safety, and a Poltergust G-00 that basically turns Luigi into a high-powered janitor. If you’re looking for a Luigi's Mansion 3 walkthrough, you probably aren't just stuck on a boss. You’re likely wondering why you’ve spent forty minutes in the Great Hall and still haven't found that one missing gem. It happens.
The game is deceptively dense. It looks like a breezy Nintendo adventure, but the level design by Next Level Games is actually a complex series of physics puzzles disguised as a Pixar movie. You can’t just vacuum everything and hope for the best. Well, you can, but you’ll miss the best parts of the game.
Getting the Basics Right (Because the Tutorial Doesn't Tell You Everything)
Let’s talk about the Poltergust G-00. Most people treat the vacuum like a blunt instrument. That’s a mistake. The real magic happens when you master the Suction Shot and the Burst. If you aren't using the Burst (pressing L and R together) to jump over shockwaves during boss fights, you're going to see a lot of "Game Over" screens. It’s not just for clearing space; it’s a defensive tool.
Then there’s Gooigi. Poor, gooey, coffee-vulnerable Gooigi. He’s the backbone of any successful Luigi's Mansion 3 walkthrough because he can go where Luigi can't. He slides through vents and walks over spikes. But here’s the kicker: he has exactly 25 HP. If he touches a single drop of water, he’s done. You have to learn to "park" him. Leave him in a safe spot, switch back to Luigi, clear the path of any sprinklers or leaks, and then bring the green guy through. It sounds tedious, but it’s the only way to solve the dual-pressure plate puzzles in the later floors like the Tomb Suites.
The Dark-Light Device is Your Best Friend
Don't ignore the Dark-Light. Seriously. If a room looks suspiciously empty, or if there’s a gap in a trail of coins, shine that rainbow light. You’ll find invisible treasure chests, hidden doors, and those annoying Spirit Balls that turn into actual items once you vacuum them up. A lot of players get stuck on the 4th Floor (The Great Stage) because they can't find the way forward. Hint: look for the missing pieces of the environment that "should" be there.
Navigating the Floors Without Losing Your Mind
The game is structured floor by floor, which sounds simple until you realize each floor has its own internal logic and physics.
- The Grand Lobby and Mezzanine: These are your training grounds. Don't stress too much here. Just learn how to slam ghosts. Slamming is more than just damage; it’s AOE (Area of Effect). If you're surrounded by three ghosts, slam one of them into the other two. It knocks them back and gives you breathing room.
- RIP Suites: This is where you find the first few gems. If you see a suspicious vent, use the Suction Shot (the plunger) to rip it off.
- Hotel Shops: This floor introduces the concept of "inventory puzzles." You need to find keys hidden in cash registers and behind storefronts. If a shop door is locked, check the ceiling. There’s almost always a way for Gooigi to slip through a grate or a pipe.
Dealing with the Bosses
The bosses are where most people look for a Luigi's Mansion 3 walkthrough. Take Chef Soulfflé on the 2nd Floor. You can’t just vacuum him. He’s holding a frying pan. You have to grab a pumpkin or a watermelon from the floor, shoot it at his face to stun him, and then start the vacuum process. It’s a rhythmic loop.
Later on, when you hit the Paranormal Productions floor, it gets even weirder. You’re basically directing a movie. You have to carry a bucket of water across multiple "sets" (the different rooms) to grow a vine. It’s the most creative floor in the game, but it’s also the one where people get the most confused because it requires "backtracking" in a way the other floors don't.
The Secret to Finding All the Gems
There are six gems on every single floor. If you’re just finishing the story, you’ll probably end up with maybe three per floor. That’s fine if you just want to see the credits, but the "A" rank at the end requires a massive amount of gold.
- Look Up: Next Level Games loves hiding stuff on the ceiling. Use the X button to aim your vacuum upwards.
- Interact with Everything: If there’s a rug, pull it. If there’s a tablecloth, suck it up. If there’s a sink, turn it on.
- Gooigi Check: Every time you enter a bathroom, send Gooigi through the drain in the floor or the pipe behind the toilet. There is almost always a hidden vault or a gem chest under the floorboards.
Why Everyone Struggles with the Twisted Suites (Floor 11)
Floor 11 is a nightmare for some. It’s a magic-themed floor where the rooms literally move around. You’ll walk through a door and end up back where you started. The trick here is to pay attention to the suits on the doors (Hearts, Diamonds, Spades, Clubs). It’s a logic puzzle. If you’re following a Luigi's Mansion 3 walkthrough specifically for this floor, the best advice is to slow down. Don't rush through the doors. Look at the cards being dealt by the ghostly magicians.
🔗 Read more: Baldur’s Gate 3 Subclasses: Why You’re Probably Picking the Wrong One
The boss fight here, Nikki, Lindsey, and Ginny, is all about shell games. They hide in hats. You have to watch the hats carefully as they spin. If you lose track, you’re just guessing, and guessing gets you hit with a bunch of cards.
The Polterpark and Late Game Scaling
By the time you reach the higher floors like The Dance Hall or the Master Suite, the difficulty spikes. Not because the ghosts have more health, but because they start wearing armor.
Ghosts with sunglasses? You can’t Flash them. You have to vacuum the glasses off first.
Ghosts with shields? Use the Suction Shot to pull the shield away.
Ghosts in suits of armor? Wait for them to charge, dodge, and then use the Burst to knock the armor off.
Actionable Tips for Your Playthrough
If you want to master this game, stop playing it like a standard platformer. It’s an adventure-puzzle game.
📖 Related: EA Sports FC and FIFA Ultimate Team Cards: Why the Market Always Wins
- Farm Gold Early: Buy the "Gem Finder" and "Boo Finder" cartridges from E. Gadd’s shop as soon as they become available. They aren't cheats; they are essential tools for 100% completion.
- Don't Fear the Boos: Boos only appear on floors you’ve already cleared. If your controller starts vibrating like crazy, a Boo is nearby. They usually hide in objects that shake when you get close.
- Use the Slam: I can't stress this enough. Don't just hold the vacuum button. Tap A to slam the ghost into the floor. It drains their HP significantly faster and hits surrounding enemies.
- Check the Map: The map in the menu actually highlights rooms you haven't fully explored or where a boss hasn't been triggered. If a room is greyed out, you’ve missed something.
The real joy of this game isn't just beating King Boo. It's the "Aha!" moment when you realize that the weird trophy in the corner of the room is actually a lever that opens a secret wall. Every floor is a tiny, self-contained sandbox of secrets. Take your time. Enjoy the animation work—Luigi’s facial expressions are some of the best in gaming history.
Once you’ve cleared the main story, go back and finish the collection. The rewards for finding all the gems and capturing all the Boos are mostly cosmetic (like the Gold Poltergust), but the satisfaction of seeing that 100% on your save file is worth the effort. Now, get back into that elevator and head to the next floor. There are more ghosts to bust.
To maximize your efficiency, always keep a Gold Bone in your inventory. You can buy these from the shopping network in the Lab. If Luigi loses all his health, Polterpup will revive him on the spot. It’s the cheapest insurance policy in the hotel and prevents you from having to restart long boss fights from the very beginning. Stop hoarding your gold—E. Gadd is a billionaire, he doesn't need your savings, but you definitely need those bones.