In Brief, the shield and trident animations are wrong.

Shield
(/)Having the shield in use, crouched, it works correctly.
(x)Having the shield unused, standing up, works poorly (the shield goes through the player's skin, all over the head.

Trident
(?)Holding the trident, without aiming, sometimes works well, sometimes it works poorly.
(?)Aiming with the trident sometimes works well, sometimes it works by switching hands on the player.
(x)Aiming the trident while holding the shield in the other hand generates a double graphic error.