Thank you for playing the game! The enemy spawning shouldn't be broken, however I might have made it so that spawner spawns less enemies after the initial wave, only getting an enemy in every 30 seconds or so. In general, near the jam's end I made the game a lot easier than it was since I was worried it might have been too difficult, but there are extra difficulty levels in the works. As for the cards' placement, I did try to reduce the need to look at the cards by having cues for the next action card near the player sprite but I suppose as you said it's better to just get the cards near the action.