My only issue is the time for next chain at chain #5 is ridiculously low. The current clunkiness of input in the game makes it so you're lucky if you can even perform a single action before the timer runs out.

Also, it's annoying when you deal the killing blow to a monster before the timer runs out but it doesn't "finish dying" before the chain timer ends and you don't get the chain, even though you killed it in time.