I have tried the game for a short time and loved it so far. Firstly thanks for reaching out over e-mail and I wanna say it looks and feels really good and can't wait to see the full game!
I have not encountered any bugs, it felt really solid so I made a video about your game trying to showcase as much as possible and will share with everyone so they can try aswell.
Especially enjoyed the realism part about hunger/thirst/etc., only thing that feels linear are zombies so far but I expect you will improve their pathing to a more complex pattern.
Definitely gonna play more so part 2&3 will be in the makings soon.
Have a blessed day!