In chapter 8, the protagonist reunited with his wife and kid, and they continue to make their way through the town.
Here’s a walkthrough and guide of chapters 9 and 10 in Somerville.
Chapter 9 walkthrough
You will begin chapter 9 in town after leaving the store / supermarket.
Use LT / L2 to melt the substances.
You will reach a bus. Melt the alien stuff around it first.
Use the lever to prop up the bus. You should be able to crawl under the wheel hole.
From the other side, enter the bus and go to the back to open the back door. This will allow his wife and kid to follow.
Continue ahead and you’ll see a car near the ditch. Pull up the object and the car will slide down.
Go to the side and use LT to melt the alien substances to increase the water level of the ditch.
Then, use RT to freeze it to allow you to cross over.
Go all the way to the end and turn left.
Keep walking across the stores with many mannequins.
Chapter 10 walkthrough
Chapter 10 of Somerville begins as you enter the store. Watch out for the alien robot.
The key to avoid getting killed is to not drop any mannequin in the store.
Make your way to the other exit towards the southern part of the store.
You will now reach a chase scene. Just keep running away.
Make your way up the stairs and follow the wife.
Then, pull and push the cart to break open the window.
Jump down and continue to run away from the alien robot.
Make your way through the church as another strange man will appear to save the protagonist.
Pull up the obstacle blocking the path.
Run up the stairs all the way to the top of the tower.
At the top, hide at the left side wall when the pink light comes. Then a spaceship will come to take you.
This is where a bug happens if you try to board the spaceship too quickly. If you get stuck here, just restart from checkpoint.
Otherwise, wait for the animation to be done and then board the spaceship.
The protagonist will be separated from his family again. The chapter ends here.