You're trapped in a guest house. It smells like rot and wet drywall. Somewhere in the hallway, a man who should be dead is humming a tune while sharpening a shovel. Most people looking for a walkthrough for resident evil biohazard just want to know where the keys are. They want to know how to get out of the Baker estate without losing a limb. But here is the thing: Resident Evil 7 (Biohazard) isn't just a puzzle box. It is a resource management nightmare disguised as a Texas Chainsaw Massacre tribute.
If you play this game like a standard shooter, you’re going to die. Repeatedly. You’ll run out of handgun ammo by the time you hit the garage fight, and then you’re basically just a delivery service for Jack Baker's axe.
I've spent hundreds of hours in the Dulvey plantation. I’ve done the Speedrun trophies. I’ve suffered through Madhouse difficulty where the bird statues are replaced and the saves are limited. What most guides don't tell you is that the "correct" path isn't always the fastest one. Sometimes, the best way to beat a section is to simply not play it.
The First Hour: Why Everyone Fails at the Guest House
The beginning is scripted. Sort of. You find Mia, she goes nuts, and you lose a hand. Standard Tuesday in Louisiana. But once you’re in the main house, the game stops holding your hand. Actually, it stops holding your hand literally and figuratively.
The biggest mistake players make in the early game is trying to kill every Molded they see. Don't do that. The Molded are bullet sponges. Especially on your first run, a single Molded in the basement can eat five or six headshots before it dissolves. If you can bait their lunge, duck, and run past them, you've just "gained" six bullets. In Resident Evil, bullets are currency. Don't spend them on enemies that don't have a key item behind them.
When you finally reach the Garage, you’re up against Jack. You’ll see a handgun on the floor. Most people grab it and start blasting. Wrong. Look for the car keys on the workbench. If you can get into that car before Jack does, the fight is basically over. If he gets in first? Well, I hope you’re good at dodging a sedan in a confined space.
Mastering the Baker Estate Map
The layout is a loop. It’s a classic Metroidvania structure. You get the Scorpion Key, you open the shortcuts. You get the Crow Key, you access the pits.
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One thing a walkthrough for resident evil biohazard usually misses is the importance of the "safe room" psychology. The music changes. It’s soothing. But the moment you step out of that door, the persistent AI of Jack Baker (and later, Marguerite) resets. If Jack is chasing you and you’re cornered, just dive into a safe room. He won't follow. He’ll just wander off to go eat some more questionable "human" haggis in the dining room. Use this to reset his patrol path.
The Dissection Room and the First Real Wall
The Dissection Room is where most casual players quit. It’s dark, it’s cramped, and there are three Molded between you and the Red Dog Head.
- Use the shotgun. If you haven't found the Broken Shotgun yet, go back. You need it.
- Aim for the legs if you're feeling overwhelmed. A crawling Molded is way less scary than a walking one.
- Once you have the Red Dog Head, run. Don't look back. The game spawns more enemies the longer you linger in the basement.
Marguerite and the Pit of Insects
Marguerite Baker is a different beast entirely. While Jack is a brute-force problem, Marguerite is an environmental hazard. When you head to the Old House, you aren't just fighting a woman; you're fighting a hive.
The flamethrower (Burner) is mandatory here. You have to find the two parts—one in the gallery and one out on the walkway. Without it, the swarms of bees will stun-lock you until you’re dead.
The boss fight in the Greenhouse is arguably the hardest part of the game for many. She scurries on the walls. She jumps from the ceiling. Honestly, the trick is to watch the holes in the floor. She likes to burst out of them. If you see her belly—the glowing, pulsing mass—dump every incendiary round you have into it. Fire is her only real weakness. If you try to use the pistol here, you're going to have a bad time.
The Mid-Game Shift: From Horror to Action
Once you leave the house and head to the Testing Area, the game's tone shifts. Lucas Baker is a jerk. He doesn't fight you directly; he uses traps. This is where the walkthrough for resident evil biohazard becomes about observation.
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Look for tripwires. They are everywhere. Look for the little wooden crates that have bombs strapped to them. You can actually use these to your advantage. If a Molded is chasing you, lead them into a tripwire. It’s satisfying, and more importantly, it’s free.
The "Happy Birthday" puzzle is a highlight, but it's a death trap if you don't know the solution from the videotape. If you've watched the tape as Clancy, you already know the code is "LOSER." Just don't forget that Ethan shouldn't pull the winding key if he wants to keep his skin.
The Wrecked Ship: A Controversial Turn
Many players hate the ship. You lose your gear. You play as Mia. It feels slow. But the ship is actually the most lore-dense part of the game. It explains Eveline, the E-Series, and why the Bakers went insane in the first place.
The key here is the Remote Bombs. They are the most powerful weapon in this segment. Stick them to the walls near the vents. When the "Fat Molded" (the ones that puke on you) show up, one well-placed bomb can take them out.
If you're trying to rank high or get a fast time, the ship is where you make or break your run. You have to know exactly where the Corrosives are to melt the locks. Don't waste Corrosive on optional rooms unless you’re desperate for ammo. Focus on the elevator and the captain’s cabin.
The Salt Mine and the Final Push
The end of the game is a gauntlet. It’s pure combat. By now, you should have the Albert-01R or at least a fully upgraded shotgun.
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The Salt Mine is basically a straight line, but it's packed with enemies. This is where you use all that ammo you've been hoarding. Don't save it for a rainy day; it's currently pouring. The final boss fight with Eveline isn't even a fight—it’s an interactive cutscene. The real "final boss" is the two Fat Molded at the top of the ladder right before you reach the lab. Use your grenade launcher here. Use everything.
What Most People Get Wrong About the Endings
There are two endings. Most people think they are based on how you played the whole game. They aren't. It’s a single choice: Do you give the serum to Mia or Zoe?
- Give it to Mia: This is the "canon" ending. You fight Mia one last time on the ship, she survives, and you fly off into the sunset (or the Umbrella helicopter).
- Give it to Zoe: This is the "bad" ending. Zoe dies anyway, and you have to kill Mia. It’s depressing and offers no real gameplay benefit other than a different trophy/achievement.
Always pick Mia on your first run. It makes the story feel much more complete.
Madhouse Difficulty: The Real Resident Evil
If you finish the game and think it was too easy, Madhouse is waiting. This isn't just a "hard mode." It changes the game entirely.
- Antique Coins: There are 33 instead of 18. You need them for more than just upgrades; you need them to progress.
- Item Placement: The Key Items are moved. That Scorpion Key? It’s not where you remember it.
- Saves: You need Cassette Tapes to save your game, just like the old Ink Ribbons.
- Checkpoints: They are almost non-existent. If you die, you might lose 45 minutes of progress.
To survive Madhouse, you need the "Essence of Defense" and "Secrets of Defense" items obtained from finishing the game or destroying all the Mr. Everywhere statues. Holding these in your inventory allows you to block 100% of damage. Without them, Jack will one-shot you before you can even say "Welcome to the family, son."
Actionable Steps for Your Next Run
To truly master the game, stop treating it like a horror movie and start treating it like a puzzle.
- Re-map your quick-turn. Most people forget it exists. (Down + Circle/B). It will save your life when a Molded spawns behind you.
- Combine wisely. Don't make First Aid Meds if you aren't hurt. You might need that Chem Fluid for Enhanced Handgun Ammo later. Enhanced ammo is the only way the handgun stays relevant in the late game.
- Check the map for red rooms. If a room is red on your map, there is still an item there. Usually, it's something small like a herb or a lockpick, but in this game, "small" is the difference between winning and losing.
- Use the stabilizers. They increase your reload speed. It doesn't sound like much until you're trying to reload a shotgun while a molded is three inches from your face.
The Baker house is a terrifying place, but it’s also predictable. Once you learn the triggers and the patrol routes, you aren't the victim anymore. You're the one cleaning up the mess. Go back in, save your resources, and remember that sometimes the bravest thing you can do is run away.