As of March 26th 2017, OneShot was updated with a new bonus chapter! It’s generally called the “solstice” update. Here’s the info you need to start exploring it.
You’ll have to beat the game normally at least once to get this ending (don’t worry, it doesn’t matter how the game ends, but you do have to get an ending).
I don’t have a guide for the first playthrough, but I have a full playthrough on Youtube including both endings, a third playthrough, and Solstice. If you have any questions, feel free to ask them in the Comments!
I’ll keep spoilers to an absolute minimum and will tag them as so, but I’ll assume you’ve beaten the game at least once to be attempting this.
Table of Contents
Starting OneShot Over
If you beat the game and the game starts in “Niko’s Room” all empty (the room you start in), you need to open the Oneshot folder in Documents/Mygames/Oneshot just like you did to run Clover.exe to get through The Tower. While Oneshot is running and displaying the bedroom, open Clover.exe and it will display a message explaining what to do.
Just delete the “save file” in that very same folder to start the game over. If you only beat the game once, I strongly recommend playing through again (it’s quick since you can skip most dialog) to get the other ending, and pay a bit of attention at the start of the Barrens and end of the Glen. Try talking to the fox in The Refuge as well.
Start The Solstice Cycle
First your game must be updated from Steam, you should have an update pending or recently downloaded as of March 26th.
Second, your system clock must say it’s March 27th 2017 or later. Probably not an issue.
Third, per above, you must have beaten the game before and reset it.
Finally, you need to proceed until the Refuge/City region and find the big locked door with Nixie Tubes. The door won’t open unless your system time is past 12:00 AM March 27th.
The door will also require a password, and direct you to “DOCUMENTS”, aka, your My Documents Folder, as many other puzzle clues have been found. You’ll find four image files named like “ONESHOT_password1.png” that contain messages from The Author/”Clover”. They also contain hints for the password. If you can’t figure it out, the password is.
Now you can sleep in the bed inside the room to restart the game once more but with the potential to reach the extra ending. Again, I recommend you only do this after playing the game all the way through and seeing one or both “normal” endings.
Note: There was a minor scene one week preceding this actual unlock. It contained some minor lore, you can watch it here if you missed it and you’re curious.
Search for the Visions
Throughout your next playthrough, you need to look for the three Visions Niko can have. If you’ve played the second playthrough you may have already found these.
Note that if you screw up, you can reset the game again in the Nixie Tube room upon entering the Refuge which is a bit faster than completing the game again.
The first Vision is in The Barrens when you enter the cave with Silver. Walk to the right of the cave and you’ll activate the scene. After the Strange Journey starts glowing, walk to the lone Clover on the floor and Use the journal in the Inventory.
Once you’ve done this a minecart appears. If you choose to continue along the minecart path, you are permanently stuck on the “true ending” path and can no longer return to the “normal” game.
You can stop following the guide at this point if you like as the choice is locked in.
Once you meet Proto you’ll need to solve a puzzle. It’s pretty easy, but the solution is, from left to right:
The Second Vision can be found after reuniting the two kids in The Glen, Calamus and Alula. After meeting them in their “house” head right and down from their place to go outside where their laundry is. Enter the other cave here and go right for the second vision. Do the same thing as before, standing on the lone Clover in this room and looking at the book in your inventory.
You’ll have to look for Gears and a battery. Head to the Water Station’s power room with all the robots to get the power cell (you visited here to get water for Maize. Unless you’re a monster. You monster).
The gear you’ll find at the first area you get to in the glen normally, you’ll have to talk to Maize (the plant girl) to extend the vines before you can reach it. Go left from the big guardian robot once the bridge is fixed to get there.
Bring the parts back to cedric and you’re good to go.
The elevator is even more broken than before, but the Nixie Tube room has a ground access elevator too. Go to that room, examine the right elevator, then get the purple haired man’s help to get to the surface.
It’s pretty much autopilot from here now. Talk to Rue to bring her back up and continue along. Enjoy the new ending.