D:OS2 hard game...that's news to me...
Just wait till you chain cc till you puke or one shot entire parties in a turn.
He is only at the start, and the start is pretty though before all, if you are new to it and don't know already what you will have to fight at which stage and were you will find certain items to stronger a little bit faster. The start is hard if you go in casually, even more on Tactician.
You can't objectively rate the difficulty, if you already have all the necessary informations.