After the protagonist escapes on a space ship, his family gets captured by the other side.
Here’s a walkthrough and guide of chapters 11 & 12 of Somerville.
Chapter 11 walkthrough
Chapter 11 begins as the spaceship lands in the underwater base.
As soon as the protagonist wakes up, go to the red light. This part requires you to get to the red light as part of the puzzle.
In the second round, just walk to all of the red lights and they should turn green whenever you get near.
Then, grab the button and use LT.
Melt the alien substance away and get to the red light.
For the next puzzle, use the light with LT / L2 to melt the alien substance until it’s almost gone, and then use RT / R2 to freeze it in place.
This will allow you to get to the red light before the alien substance covers it again.
Once the puzzle is done, go to the light blue pod.
This next part requires you to spam LT / RT and a mix of both LT RT for the middle.
When each part lights up, just hold the relevant button. LT for left side, RT for right side and LTRT for middle.
You have to do it many times and it gets quicker. Continue doing the same thing until the screen fades out.
This will result in the underwater base shooting both you and another person to the alien ship.
Chapter 12 walkthrough
After reaching the alien base, you will somehow find yourself in your home again. This is the start of chapter 12.
Walk to the right side and enter the basement.
Grab the dog food and bring it up.
After hearing noises, go out of the house and you’ll see fireworks.
It’ll disappear. Enter the house again and go to the basement.
Touch the strange man’s hand again.
Now, use the light and LT to melt the alien substances.
This time, you will see a tunnel instead. Go into the tunnel.
You will then reach an alien pod. Go to the end and press the button while using LT.
You will be pushed back underwater by the pink light.
Swim all the way down following the path.
Surface up to get some air first before resuming the swim to the left.
Surface up again. You will see the strange man from before. Shake his hand again.
Now, go to the back and to the right side.
Like before, open the crate at the right to get a torch. Grab the torch.
Use LT / L2 to melt open the alien substances and proceed into the tunnel.
At the end of it, you’ll see your wife and kid on the couch.
Here’s the first ending. You just need to sit on the couch and wait until the screen fades out. This is the first ending called resignation where you accept your fate.
In the end, you will end up alone on top of some alien matter as the wife isn’t really there.
Start from checkpoint again and avoid first ending
To go further in the game, you can start from the checkpoint again where you got the torch.
Go into the tunnel again until you see the wife on the sofa. This time, use LT to melt it all away and go straight in.
You will reach the alien pod again.
Like before, use the button and LT to affect the inside of the pod.
You’ll get pushed down again.
Swim to the surface and get up.
Along the way, the wife is there again. Use LT to proceed ahead.
You will see the boy still running away. Follow him.
Some cars will continuously come. Use RT / R2 to stop the car. The other cars will collide with it.
Do the same for the other incoming cars.
At one point, a bus will overturn and slide towards you. Use RT again to stop it.
Then, use LT on the bus to go through it.
You will reach another weird tunnel. Just go all the way.
Once again, you’ll arrive at the pod.
Use the button again.
You will then surface at another area.
This time, just go right to the end where someone’s waiting.
Shake the hand and use both LT and RT to make an explosion.
You will now reach the pod again. Use LTRT this time.
For the second one, do the same.
For the third pod, you will see a boy cycling.
When he gets under the lamp post, use RT to stop his bike.
Then, use LT to melt the ground.
Finally, use LTRT.
The chapter ends here and one more chapter which is the ending remains.