I like the theme and how it currently looks. It's a great start for it to turn into something great, and excited to see the development progress.
General Feedback:
- Unless you can get more than 3 upgrades each level, I think the upgrades are spaced too far apart
- Tree collisions are too big
- Does the fire rate upgrade work? I had upgraded it a few times, and didn't feel like there was a change
- It would be nice if there was a confirmation to restart the level
- I didn't press the 'R' key accidentally during gameplay, but would be a nice safety net
- You can see where the grass is being tiled, would be good to have this be seamless
- The map feels a little empty with the number of enemies spawning
Bugs:
- You can reach the edge of the map and fall off
- Level and experience text overlaps each other, and goes to a new line
- You can stand inside buildings, bushes, trees etc
- Sometimes you can get on top of the bushes
- For the trees, you can push yourself inside of it and fall through the map
- In some cases, the zombies and bats can't hit you when you are inside one of these objects
- Since the XP goes straight to you, I could stay in one of these objects to gain some free XP until I started to get hit, or one of the flaming skulls was approaching