The Aquarium — Sharks & the Control Room

Push the crates into the water to make a path across, then continue through the door — the whole facility beyond is flooded. If Richard Aiken survived his snakebite earlier, you find him here again, terrified. As you try to warn him, a massive shark bursts from the depths — Richard shoves you clear and is dragged under in your place.

Head left to the corner door without exploring side paths, climb the stairs, and use the Control Room Key on the door at the top — discard the key afterward, it won't open anything else.

Downstairs in the Aquarium Control Room, grab the First Aid Kit and the Aquarium Map. A document on the desk lists a number for releasing tank pressure — the digits are randomized per save file, so read it yourself and remember it.

Through the back door is a storage area with two exits. The first holds grenades — grab them. Take the double doors beyond for the second exit.

Two sharks are dying here now that the water's gone — shoot the smaller one, then head to the back where the giant shark, Neptune, is stranded but not yet a threat. Cross the wet section and climb up; in the far corner, try to grab a key and Neptune will thrash and knock it away.

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Head back up through the Control Room and cross to the section of the aquarium the sharks used to block. Shoot the third shark, then take the left door to find Plant 42's roots poking through the wall — harmless for now. Remember this spot; you'll return here shortly.

Return to the storage room and open the other gate — the water's fully drained now, so this is your only way back. Grab the Magnum Ammo on some crates, head upstairs, and cross back through the aquarium facility to the Guesthouse hallway. Use the Gallery Key on the door marked "Gallery."

Move quickly inside — moths will swarm you here. Head to the back, then left, to find a body; take the Insecticide beside it and backtrack to the hole in the corridor from before. Spraying it there clears the moths out for good, so return to the Gallery.

Take the handgun magazine from the center display case, then grab the Room 003 Key and a red herb near the body you found. Use the key on the door marked "003" and discard it once inside. On the bookshelf, take the Blank Book — instructions for destroying Plant 42 — and check the bathroom, where uncovering the tub yields a dagger. Deposit spare items at the save room and pick up the Red Book left there before continuing.

Back in Room 003, use the Red Book on the bookshelf. It completes a row of seven numbered books whose covers should form one continuous image — three of them are out of place:

A wardrobe slides aside to reveal a hidden passage into a small vestibule — where Plant 42 itself is waiting.

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After the fight, Rebecca finds you and you have to tell her Richard didn't make it. The two of you retreat to the medical storage room; she breaks down and you do your best to comfort her before telling her to keep herself safe and pressing on alone.

Leaving the Gallery, you hear gunfire and find Wesker. He seems surprised you're alive and asks where Jill is, visibly suspicious when you say you two got separated — he tells you to keep investigating before the two of you split up again.