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Now, why is this my expectation? Because other games that do have skills that require you to be at the certain position regarding your enemy, manage to do exactly that. I hope you can appreciate my expectations since they are based on similar experiences.
Yes, this game's combat system probably does rely on positioning the most of them all, but doesn't that mean they should have made it more robust? Where in the tool-tips, guide or manual does it say that those added benefits of our skills are to be used only in groups? I think that is your own, personal deduction as a result of you adjusting to a badly implemented system.
You say that's not the case and that there is more to combat than that. I will be the first to agree that there are still things in this game, I don't understand or badly comprehend.
So I would like to present a challenge to you madam/sir. Please, help me understand it without using hyperbole yourself.