I really liked it. The art and music were great. The controls are a bit weird though. It’s a bit unexpected to use the middle mouse button to change the camera angle, but I got used to it. The switching between item slots becomes a bit intense in later waves.
Like others have said, it’s a bit repetitive, so it becomes kind of a mindless chore to pick up the animals. A variety of tasks would definitely improve the experience.
The other NPCs in the map don’t seem to be doing that much. Could you find a better use for them?
Anyway, great work.