Tristan gives a silent prayer of gratitude that he at least afforded Nin a softer landing, a second that he's still alive. Still, it's panicked. There are two main options: running towards the horns, and climbing. He's just tried and failed at running, and Nin's conscious now. Let's try to put a tree between ourselves and the Beast and climb as fast as we can. [4,2 +1 = 7] "Run toward the horns if you can't climb," he shouts, "I'll shoot it if it tries to follow you, keep its attention on me." Tristan is assuming he is still the one the Beast has its attention on. He's no way to know what just happened within the Beast's mind, and if that's made Nin the primary target now. But as soon as he gets some height, he's willing to shoot as many arrows as it takes to make it change its mind.