Yesterday I played the final battle 2 times over again and now I find it a lot easyer than the first time (on low difficulty and with 19 skills left!).
I love the whole game and if I had more time, I play and play this game ....
But to be honest:
the fisrt time after I play the final ending, I was disappointed too ... but after a while I must say i love the whole game, also this "bad" ending!