I agree with MrPouletBZH that the controls feel hard to control. I dont think this necessarily a problem, but it becomes a bit annoying when you have to collect those relatively small things. How I usually do movement in Unity myself is that I set the velocity directly instead of AddForce. This on the other hand makes for a very rigid movement, completely the opposite of what you have now.
I think the movement you have now is also kind of interesting, but for it to work well maybe the level design needs a bit of work. For example that you dont have to be this precise, or maybe if the character moved a bit slower you would have more time to aim your jumps. Just some ideas :)
You can also check out the "2D Movement in Unity" tutorial by Brackeys (on YouTube). There he has a download link to a 2D character controller he made, which seems pretty easy to use.
All-in-all really well done! I liked playing it :D