I have 3 things to say after playing:
1. Game feels SO good to play! Seriously, just great fun. I died in the second area, right at the exit, but I didn't feel "cheated" in my death - I was low on health going into a boss fight, and I put up a REALLY solid fight! Had gotten some good cards right before it which helped a lot and almost let me get through. But I had put myself into a difficult situation prior to facing the boss.
2. I like that there are "deactivate" cards which have a single use, but are powerful! Really cool way to include strong tools at lower cost without feeling broken.
3. I noticed some issues with the "Fight or Flight" card. It lets you drag onto an enemy, but not onto yourself, even though it has 2 effects to choose from, one offensive and one defensive. Also, when dragging it onto an enemy as the last action in my turn, the enemy was able to act BEFORE I got the opportunity to click on my selected action. When I took damage due to a lack of shields, then chose the shield option, it did "undo" the damage, but it felt weird. I'm also concerned how it would interact with a killing blow - would I potentially lose the game and not be able to un-lose even though I had an active card in play to mitigate the damage?