The lack of guidance and (embedded) tutorials is a biggie. I was massively lost and confused for the first 1-2 hours. Very frustrating.
Also the interaction of map and instructions could be much better. Dialog pops up in the bottom left corner, while the map is in the top right. It happens quite often that someone asks you for help, but on the map there's 4-5 flashing squares at the same time, making it too hard to read in the stress of the battle.
And it takes a while before you know what to pay attention to and what to ignore. The game will yell at you all the time, but many of the messages aren't actually urgent.
Still a fun game, I'd recommend it, but they could learn a thing or two from Nintendo about player guidance and ramping up the complexity.
