Nice.

Could use a little more visual feedback on the attack since it wasn't really clear when an attack was actually doing damage or not.

Having something to disguise the load time would also be good since completing a level currently causes the game to freeze briefly before abruptly starting the next level.

Very nice work! I love the block-y (is it voxel art?) art style on the character, and I really like that you save yellow blocks to get upgrades down the road, gave me a good reason to replay it multiple times. Apparently I also can't read, cause I didn't realize till my second playthrough that red blocks healed you, Also a nice touch.

I did have some trouble determining if I hit an enemy, or if they hit me. I also found that using "spin" got me killed more than anything else, but maybe I just needed more practice as I got better with it over time.  I got hit a lot while moving down as well, found there wasn't quite enough visible screenspace below me, at least until the smooth movement caught up to the player, if that makes sense.

I like how the levels get bigger each time, but you're also on a short timer each level, so you have to find a fine balance between rushing while being cautious. I also liked the placement of the enemies, I was nervous turning every corner, and there were a few fun moments where I got swarmed, and fighting my way out of it felt really good! I could see this being a really fun mobile game!