Continuity: During the fight inside the spider, West wraps one of Loveless' men in a chain and kicks him out the door. You clearly see that the chain comes completely off the its roll and falls to the ground, presumably with the body. Yet later on in a wide shot of the spider you can see the body and chain still suspended from the spider. Then when it crashes, West uses the hanging body to save himself.

Continuity: When Gordon and West are chasing Loveless in the train. They pass through a tunnel. On the other side of the tunnel, Loveless has elevated his train on crutches to hide as West and Gordon's train goes under Loveless' train.  During the shot where you look through to the end of the tunnel there are no crutches showing where Loveless is hiding. In the very next scene you are looking back into the tunnel from the end and the crutches of Loveless' train are now there at the end of the tunnel. Then Loveless' train lowers back onto the track.

Visible crew/equipment: When Jim West is hanging by the rains of the horse you can see the rider's boot as Jim West is telling the horses to back up.