Model - At 1:28, after Yang Xiao Long becomes enraged, her eyes turn red. However at 1:33, when rushing towards the enemy, her irises are seen back at their natural color, yet they revert to her rage red irises when actually attacking the enemy from 1:34.
Dialogue - While coaching herself, Weiss Schnee thinks "Right foot forward", but puts her left foot forward instead. (This may be because she was taught right-handed, but she is left-handed, so all of her moves would be reversed.)
Model - At 2:21 as Weiss realizes Ruby is on her striking path, she is carrying a second Myrtenaster on her hip.
Rendering - As Ruby Rose impacts Weiss after being struck back by the Beowolf, you can see a rendering cube in Weiss' right hand.
Model - At 3:53, Jaune Arc gets hit by a branch which leaves a scratch, but if you look closely, it can be noticed that the scratch is already present before being hit.
Model - At 6:15, Miló's lower half is dark, while the top half is bright.