There is a very brief dream scene/hallucination depicting a battle and a cavalry horse is shown collapsing. It’s unclear if the horse is killed. It’s very much a “blink and you’ll miss it” scene.
The protagonist suffers from head trauma and has visions of people with backward faces, snakes, lepers,... It isn't a perpetual state though, just because of an momentary injury
In the beginning of the film there’s a quite graphic fall with the person bouncing off things along the way before landing. In a later scene a high fall is teased, and later in that same scene someone does fall to their death. Landing is shown.