The Forest Temple is the first dungeon you'll encounter after you travel into the future in The Legend of Zelda: Ocarina of Time remake. After you grab the Hookshot from the graveyard in Kakariko Village, you'll make your way over to the Sacred Grove. You'll learn that Saria has gone inside the temple, and cannot be found.
Additionally, you find out that she's meant to become one of the Sages. It's up to you to head inside, and save her from the twisty dungeon that is the Forest Temple. Here's how to complete the Forest Temple dungeon in Ocarina of Time remake.
As soon as you walk into the Forest Temple, two Wolfos will appear and attack you. Remember that they're only vulnerable when they're attacking or if they miss their own attacks. Then, look up the large tree, and you'll find a Gold Skulltula all the way at the top.
To get it, climb onto the branch, and then use your Hookshot to hit it and pull the token back to you. Then, open the chest on the other tree to get a small key, which you can use to open the locked door below. Unlock the door and head inside, but watch out for the Skulltula that will drop from the ceiling.
In the main room, you'll encounter four colored Poes, who seem to snatch away the fire from the torches at the center of the room. Before you venture off, go up the staircase directly opposite of you. Then, look to the right to find a Gold Skulltula.
Use your Hookshot to get its token. Go inside the door at the top of the stairs, and you'll encounter a Blue Bubble, which isn't a bubble, but actually a flying skull. Block it with your shield and then hit it with your sword to defeat it.
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