Normally I hate long premieres, but I think this absolutely would have benefited from a double-length episode; the pacing was solid, but the ending just felt very abrupt.
So far the plot seems pretty generic, the twists are predictable, and our hero seems like a bit of an idiot (if you're not paid well and not good at hunting and it's not your dream or anything, why not just get a normal job where you probably won't die??). On the other hand, the animation was really good and I loved the fight scenes.
Ultimately I give the premiere a 3/5. I'll give it another episode or two to get to its hook and see if I want to continue from there.