Trapped on a planet by yourself with a murderous monster can be a stressful ordeal, but Dale is taking it relatively well. Relatively being the key word. He is doing his best to make sure the world killer stays on his heels while trying to find a way to hurt it before his time runs out, all done with the help of his imaginary friend…you!
You know, whenever I imagine someone firing at a giant horde of spiders or a big ol' centipede, I don't usually expect them to yell "SOILING MYSELF!" while doing it. I mean, he is alone, so he's not gonna have anyone hearing him, but still, you could work on that.