@joe_nelson_24 It was through the wolf mastery challenges that I learned how bad the hit boxes were. You can kind of guess the general area but shouldn't have to really.

@b00msie agreed. I just did the Raven Odin Mine Challenge and on the 2nd guard I put to sleep so that the 3rd would come investigate and I could air assassinate him. Well many times the guard would go to sleep but out of range of the air assassinate ability so the guard coming over would also be out of range. Another glitch was Eivor suddenly glitching behind a wall in the middle section. Another was pressing the prompt to air assassinate and instead Eivor would jump down and stab the guars in the back. I almost broke my controller in frustration at the way the game behaves! And the Odin Mine Wolf one? Don't even get me started! I loathe these but really want the trophy so I'll plod through but I hope they never put these in an AC Game again unless they can fix their AI to behave better!

I don't think the developers have taken our opinion into consideration at all... a "Mastery Challenge - Part 2" has just appeared on my trophy list. I assume that an update will be released soon...