Cute game! love the Alien design! I got softlocked twice, somehow shifting big in a small area and then being unable to shift back, once in the tutorial and once after checkpoint... 3? when I was doing backtracking for buttons. I would recommend providing some sort of indicator for where the spikes will be, as well as having them come up very quickly and then retract slowly, as it can be difficult to time / know where they are if you reach them fast enough to not have seen them retract. I got caught and lost a lot of progress once because I hadn't seen the spikes at all before they got me while barely visible.
All in all, good work! Great job getting this done and submitted in such a short time!