for people struggling with the 6 turns or less, start in southern europe instead of scandinavia. you need to get lucky with 2 troops taking the rest of europe while your other troops move towards australia.
random setups, seemingly random falling placement screwing up combos, a turn counter, score limit, and stage hazards. i want to say skill is involved but there's too much random elements messing up everything and anything.
get 2 cards to boost damage for the first skill, then get a cooldown reduction card for the first skill, and proceed to win the game. got a ranger doing 30k shots with her first move every second.
we can use useful status debuffs on the bosses. thank you for that, you have no idea how much that little change means to me as an RPG fan. for once, leveling a debuffer is completely worthwhile.