I thought the gameplay was great! I really liked the story too. The idea of adding upgrades like the turret was fun.
Suggestions: The mech is a little OP, I could stand near the flower with some turrets and spam and theres no chance a chip would touch it. I played till wave 9, but the waves were a little slow for me. Perhaps making the chips fight back would help with this. Second, just adding some background music or something is also a good way to spice up a game.
Overall I thought this was a really great submission!