That was some really smooth animation. I liked the different ways Atreus messed around. The repeated use of boy got predictable though. Maybe this should have been shorter so as to not let it get worn out. That temple bit was particularly drawn out, waitiNG for the "Boy!" became a chore. I feel like it should have just been left out. I didn't really get what the problem even was. You could have had a nice joke with Kratos just knocking him out and then having a questioning "Boy?", but there wasn't a "Boy before that and there wasn't enough time to emphasize the joke, and the build-up was just really boring to me. That ending with Kratos' mouth was really funny though.
Overall the ending, some of the comedy and the animation were nice, but it went on too long with that temple bit.