Good job on your game!
I survived extinction with 220k bamboos :S
I really liked the art and the music. Really nice manu designs with the bamboo fonts.
Wish there was more time to decide before the fights but that's what the pause menu is for ;) You can pause and then select an option.
I'm not sure what is the benefit of having more pandas.
I also liked the parallax effect of bamboo sticks. You could try to flip some of them horizontaly as well as randomly slightly change their angle and/or proportions and/or color similarly how you change the size to make them a bit different from eachother.