Pretty neat ideas getting used here! I thought the concept of gathering the sunflowers to then change the level was a pretty cool design decision.
There were a few odd moments that sort of broke the immersion a bit, for example the arrows always face the player, so if one passes you, it'll turn to face the player which caught me a bit off guard. To fix that, you can simply set the rotation or scale (I'm not sure how you did it) when the arrow is spawned rather than every frame it exists.
Hope that makes sense.
Anyway, overall this was a pretty good submission. Good work!