I keep dieing! You asked for constructive criticism, so I have a few things that stood out to me
1) It seems that EVERY mistake you make is instant death. I understand it is a zombie game, but there needs to be a little bit of forgiveness. Players expect these kinds of games to have multiple ways to play, but as of right now there seems to be only 1 for each encounter. the cave for example causes instant death if you investigate, instead of just taking some resources
2) if using all your scrap will automatically cause the car to stop working (and the player should know that in game), then being able to 'buy' parts with all of the scrap should pop up a warning
3) Related to point 1, make more interesting ways to deal with situations. get creative, get zanny!
Overall I love the idea of this game. it reminds me of a mix or organ trail and chose your own adventure books. Would love to see a more fleshed out version