Part 5. Several important ones here.

Haste Helm was redesigned, but 3D model was poorly implemented.
1. The feathers always detach from the helmet:

[Linked Image from i.imgur.com]
2. There is no 3D model at all for Halflings:

[Linked Image from i.imgur.com]
Also there is no animation for dual-staves. They just overlap each other:

[Linked Image from i.imgur.com]
Clipping (Selune Shrine in the Owlbear Cave):

[Linked Image from i.imgur.com]
Clipping (unless intended?) in the Whispering Depth:

[Linked Image from i.imgur.com]
Clipping in the Blighted Village celar:

[Linked Image from i.imgur.com]
Barcus is broken:

[Linked Image from i.imgur.com]