I really hope they do this with all weapons, it's comically bad sometimes fighting on a slope.

Throw the Spear at point blank. Not kidding, this is a useful way to use Spear if you are out of range, or on a weird angle.
Congratulations you can now use a Spear on any angle.

I do wish the spear would get a tad more range, it seems like I can hit further with frostner, and that's a rather small hammer ;D

Slight elevation differences are the strongest enemies.