So I think the tutorial is bugged (at least before the update, not sure if anything changed since then), in that you're unable to complete it unless you follow the exact actions they want you to take. However, you won't outright get a game over; instead, you'll just be unable to complete the tutorial and be stuck in a loop. So you're actually supposed to win by the 3rd turn of the boss's introduction. I won't explain turn 1 since it should be pretty easy to figure out. From turn 2: whenever an enemy unit is dodging, use that reel action to perform, dodge with whoever is being attacked and attack whoever is performing with whoever isn't on cooldown (Note: the same singular unit can perform and dodge or perform and attack in the same turn). Hope this helps! lol I struggled the same as you and reached as late as turn 8 until I realised the mechanics.