Talents cost is too high. invincible blow lvl 170 costs 2700 gold and gave me in summary 1190 dm and resist one attack. My damage is over 4000.
In my opinion if bonus damage and hea for talents is constans per lvl, costs will be constans too for example: heal talents: 200 silver per level, Ferocious strike 200 gold per lvl, invincible blow 400 gold per lvl, shield bash 100-200 gold per lvl. endurance starts costs 50 silver and one silver coin more for each lvl. Problem with mission because skeleton archer is the last missions enemy for me. More enemy like FLETCHER will be good too.