Tret Tree

Within Tret, a new dungeon reveals itself after climbing up a path of vines and entering a hole above Tret's face. Inside, it is possible to climb up new vines to reach a higher floor or climb up branches instead. There are various holes with cobwebs on some floors. Fresh looking leaves will begin to fray once stepped on. Fraying leaves will completely break apart if stepped upon and Isaac will fall down to the floor below. Outside, on the branches, the Jupiter Djinni Breeze can be found. Upon reaching the topmost branch, it is possible to find a leaf at the centre of the tree which will then break and you will fall through the holes seen on every floor. After falling through the holes and landing on the bottom floor of Tret, the player will then find another Tret face on a nearby wall. Tret awakens and tells Isaac and company they have not found his kindly side, as they had hoped. He then engages them in battle.

Walkthrough
The inside of the guardian Tret. This section is mostly vertical in nature. The first floor is quite easy; just climb up the vine on the far left side. On the second floor, you will see spiderwebs covering the ground. Some of them have leaves on them, and some don't; those with leaves can be stepped on, but only once. So, you must choose your path carefully. Go to the furthest point south, and jump across three leaves. Then, jump to the north on to solid ground. walk to the right and through the next door.

You will find yourself on a branch on the exterior of the tree. There is a "bubble of visibility" around your character which lets you see through the leaves near you. Head straight out to the right to the end of the branch, ignoring sidepaths, until you see a vine to climb up to the next level. On the next branch, head to the left and reenter the tree through this new door. Walk along the wall until you reach the left side spiderweb with a leaf on it, near the Psynergy stone. You can grab the stone if you need it, but it's not worth falling through the floor for if you don't. Move carefully between the two sets of spider webs until you are standing next to the rightmost one. There are two options once you are standing on the leaf: Head for a chest, or progress. If you go for the chest, you'll fall down one floor and have to walk back. The chest contains the Healing Ring, which will heal 70HP for free an indefinite amount of times, so it's a worthwhile endeavor to grab it. Occasionally it will break while using it, but this can be repaired at a weapon or armor shop easily. Once you're back, just jump past the chest and climb up the vine.

The next floor is quite simple, just walk outside and onto the tree, and then as far right as possible until you see the vine, same as before. This time, though, go up the sidepath on the top branch. At the end is the Jupiter Djinn, Breeze. Now, two of your characters should have one, and the other (Preferably Ivan) should have two. Go back down the sidepath and enter the door on the left side of the branch. Inside is a treasure chest, and several leaves on a big spiderweb; just jump onto them and fall through the floor. When you are on the floor below, head out the exit on the left side by taking a northern route. You'll be outside on the branches once more, but this time on the left side. Take the bottom fork of the branch to the end and then climb the vine up once again. Walk down the new branch into the tree once again, and you'll find yourself on the side opposite where you were before. Go to the northern part of the tree and jump south onto the leaves on spiderwebs. Go down again, then to the left, and then down once more. Now, turn around and jump back to the one you were just on; you will fall through the floor, into the center hole that has been on every floor of the tree so far. You'll land at the lowest floor, where Tret is. Save here; you're about to have a boss fight.