The bit that impressed me the most was the character animations. Those sprite animations are insanely good, especially considering the small amount of time you had to make them. I couldn't puffshroom spam to cheese to victory, but still had a decent time. I wish the earlier levels were a bit snappier since you have all the plants at once. Going through the same zombies for ten waves gets a bit repetitive. The levels felt twice as long as a world one level from the original PVZ.