The enemy attacks aren't telegraphed very well, so it can be hard to know when you need to move to get out of the way of an attack. It can feel like as soon as you move in front of an enemy they immediate hit you without having much ability to do anything about it.
When getting new cards, it would be nice to be able to see their stats in full, so you don't need to back all the way out to the deck editor just to see what you got. The game also doesn't tell you the type advantages anywhere in the game, you just have to figure it out on your own, which can be kind of hard with how fast paced the gameplay is.
Most of the games that I lost were due to a "trophy victory," but I wasn't aware of how many trophies that my opponent had during the game, so it felt pretty sudden when I lost without getting hit. If the number of trophies each side has won is displayed during the fight, it wasn't somewhere I was looking. Because of how fast-paced the gameplay is, I'm not looking away from the grid at any point. Displaying the trophies above the grid might help, that's where I'm looking most of the time to see where the enemy is in order to both dodge and land attacks.
It's pretty fun overall though.