Yeah, I know it isn't the best design ever, but I was in a rush and couldn't calculate so precisely where to put the spikes (I draw the map as a whole).
Also the key thing is half-intentional half-accidental. I know how to update the variables, I just wasn't sure how to re-add all the things to the scene. That, plus the spikes part being hard made me take the decision of keeping everything in the "inventory".
And the music was made by a very kind guy - you can find him on the credits.
Thanks for the feedback!