I liked the voxel-art style in game and your intro. I'm glad you added a 2x speed up to the game, too. A quick way to restart would also be appreciated.
I played the first few stages a couple of different times with different strategies, but ultimately, none felt particularly rewarding. No matter what I tried, it felt like I was slowly dying rather than winning. Balancing games is so hard, though, especially in a game jam time budget. This was very ambitious.
Overall, a solid game jam entry. Good job!