How I haven't find this sooner? Its incredible, It has everything. A good story, well developed, enganing and you will find yourself wishing for more. Characters that at first hand appear lack-luster and boring, but OH BOY, everyone there gets what they deserve. All characters are well writen with such good development that sometimes you dont believe they are the same person from the beginning of the game, ESPECIALLY the protagonist. The way you get to know him and compreend all the things that surrounds him, its amazing. You can see why every character loves him, thats not a easy thing to do on a VN ( normaly everyone loves the protagonist because "it is what it is"). I dont have a lot of bad things to same about the game and I think it isnt worth to say, because they are all minor, like how some of the side-character acts or some minor plot holes, but these things are forgetable and may easily change on the future. It is a really good read and I would recomend it to everyone that wants an amazing scifi VN, with a LOT of dog bones as a bonus. 

P.S.: Returning after Alon's routes and DAMN, I have never experienced something like that on any visual novel I read. On my first read of Shelter, I praised a lot of its elements and would certainly put it on my favorites visual novels, but now? It's the best by far, without a doubt. Especially bc of the protagonist ( it just get better with this update ) and the interactions between player/reader and the story. I am anxious and excited to read it again in the future.