Played the start and the first battle on desktop for about five minutes, with the sound off. To your questions: the first-battle tips were clear. "Click the glowing card, then the glowing slot" is all I needed, and End Turn lit up when it was time. I didn't hit a keyword I didn't understand in that stretch. I didn't finish a full battle, so I can't say whether any fight is unfair. The art is the standout. The cards look great and the board reads well even on a tall phone-shaped screen. The story intro was a nice way in, though I'd add a skip option for return plays. Good game.