Good job putting the game together. There're several things to address:
- Sometimes when you use mouse in game it selects the entire window and the game gets a blue tint. Very annoying, not sure if it's a Unity thing.
- There are little blue fires that we collect during the game but it's not clear what's their purpose is. Would be nice to see it at least as a final screen score maybe? After first level I just avoided the zombies and ran for the next exit.
- It's cool that you added a boss with a different attack mechanic! I was able to get him stuck behind a pillar and stab him without any danger to myself though.
Overall good first try, keep working on your skills