Very cool! The controls were intuitive and I didn't find any bugs. The colliders for some of the objects seamed a little large. The spikes in particular. Good job!

I think the spikes' hitboxes are too wide.And maybe you should change the enemies' color.The blue color just hid themselves in blue background.I did not expected that they will do harm to me at the first time.

Nice little game!

As seb46 wrote below, you might consider tuning the hitboxes to be a bit tighter.  For example, maybe pull the spike hit box in from the sides so that you can't run into it (big metal spikes only really hurt when you fall on them, right?).

That being said, I hope you had fun this jam!