I just recently unlocked tasks, and I have one that shows as completed in the task log, but it's still taking up a slot. Is there something I need to do to officially complete it? Thanks!

Secondary question: When should I use a quick attack, finishing blow, or block in battles?

to finish a task, you click the green checkmark in its box (before it is completed, this is a red X that lets you abandon the task)


in most situations, one doesn't use those moves. Most common one to use is block, against lost grove bosses when they're going to use large attacks, if the attack isn't going to be taken care of solely by the tank.