Hey, just played your game ! I really liked the simplicity of the artstyle, it's quite pleasant for the eyes.
However, i found the game a bit too easy. Especially because i could often run trough the spikes like if there was nothing (see picture below). Also, the concept is quite good, but personnally i found the levels a bit too repetitive. To me it lacks a game mechanic that spices things up a bit.
All in all, your game needs just a bit more balancing to me, but it's still quite good, so keep it up !
NB : j'espère que ta chaîne marchera, je te souhaite bon courage pour la suite ;)