Since this is meant to be the final day and the final showdown, yet everyone seems to be struggling to figure out what to do, I've decided to help. 

Grace and Lewis will face off, the battle only ending when one of them dies. 

Once that battle is over, Torro will battle whomever remains.

At the same time, Peter and Zack will be facing off. 

From there, the winner of the games will be concluded by the winners of the battles facing off. 

Kneeling as close as he could get to the hedge, Lo was watching the cornucopia carefully.  It would be risky to just run in there, not when he didn't know whether someone was hiding inside of it, waiting for someone to come running up so that they could kill them.

He had an arrow on his bow and in his hand, ready to be fired if he so much as saw or heard another tribute.  Lo knew that with only five of them still alive, that no one would be interested in new alliances.  If he ran into someone, he expected that they would try to kill him.  So he would be ready to kill them before they could kill him.  He didn't want to kill, but if he wanted to survive, then he would have no choice.

Turning his head and taking his eyes from the cornucopia for a moment, Lo looked up at the sky.  The clouds that the acid rain was falling from looked like they were still getting closer.  He couldn't tell where in the arena they were falling, whether they were right outside of the maze or whether they were falling on the beginnings of the maze itself.  He hoped that the rain would stay away from the rain, because if it got too close, then Lo wasn't sure what would happen.

It was becoming obvious. They wanted bloodshed. So bloodshed they shall get. He hadn’t heard the rain until it started reaching the centre of the maze. He’d been blissfully unaware, nursing his wounds from the feast with small sips of blueberry water and ripped fabric make-do bandages. With the back of his shirt eaten away by the first acid rain, and both sleeves torn to make bandages, he was honestly considering just tearing off the top half of his clothing — Eh, whatever was still clinging to his shoulders and chest might reduce the chance of a few cuts and nicks, so he’d leave it be.

Today's challenge in the arena should lead to almost everyone being killed, and possibly a winner being announced. Therefore it's vital that everyone do their best to plot with others, to get interactions going. The acid rain is forcing the tributes to either choose to die willingly or fight at the center of the maze. It's your choice as to what will happen to your tribute, but please if you decide to have them killed by the acid rain - at least write a little drabble about it so that your character has some closure. 

Day twelve will last longer than initially planned so that everyone can get things going and in order. It will last today, the sixth and possibly the seventh. 

It's unreasonable to assume that all tributes can be forced together without some major fighting going on. Really dig into it guys. 

At first, Lo had stayed near the edge of the maze, in the hope that the rain clouds would stop drawing near to them.  But when the rain clouds kept getting closer, he decided that he'd better move closer to the center.  The maze was not easy to navigate and if he waited until it started to rain on it, then he would not survive.  He needed to get closer to the center and hope that the rain wouldn't reach that far.

Lo tried to keep track of where the acid rain was falling. That was his only chance of survival.  There had been a slim chance that his shelter could have held up to the pouring rain, but he'd decided not to chance it and to find whatever place in the arena was safe.  Which meant if he made a mistake, he would be dead.

Stepped out of the forest, his eyes scanned the sky.  The rain clouds were behind him, and in front of him in the distance.  It appeared that the clouds were surrounding the edges of the arena, and closing in on the maze.

Returning to the maze was not something that Lo wanted to do.  The center of the arena was the place to avoid, especially the cornucopia.  Last time he'd entered it during the feast he'd killed someone and gotten into a fight with another tribute.  It wasn't something he cared to repeat.  But Lo didn't think he had a choice.