Absolutely fantastic. Great twist on a concept I've seen a couple of times in the jam, the shooting to move your platforms makes it stand out.
I really, REALLY like how even though the platforms aren't necessarily physical, they act as cover for your enemies. It can make the decision between playing a platformer or a shooter tough. Also, I don't know if it was intentional, but being able to jump in the air if you ran off of a platform was a great inclusion. It added quite a bit of skill that wouldn't have been there if you were only limited to jumping on the ground.