Depends on the range. Do I merely possess the weapons I do in real life?
If it were in a head on fight, I'd have a chance, and it would be easier for me to aim and fire first, having a shotgun. From a distance though, he'd annihilate me with his rifle. If I fought him with my kukri, I have no idea. He isn't supposed to be all that good with a machete...
Overall, I'm not a fan of my odds. Does he have the dinosaur? I'm fucked if he has the dinosaur.