Well it's not like Tyrion was given much to work with. The script is itself beyond laughable. The lack of imagination in most of those lines is appalling, across every "character" in the game. Most of the exposition dumps are deliberately stunted and it hurt the script so very much. Stuff like the infamous "I don't even have time to explain why I don't even have time to explain... but I will anyways" or that "I could tell you of the battle that silenced the Traveler but I won't, for no real reason" all really hurts the script, which hurts the delivery and the "characters" themselves. I think Ghost gets the heaviest criticism because his is the first and primary voice players hear - and one of the only voices they heard in the Alpha and the Beta. Really, most of the voice acting was just as tired as Ghost's. It wasn't a problem with his acting, I would say. It was a problem with the script. It may have been a problem with how he was directed to say the lines. It also could have been because he was given dry pseudo-science jargon to mumble about to no one in particular while the player slays beasts. Not everyone can be as talented at that as Jen Taylor. Still, I think Tyrion does deserve another shot. Either that, or Bungie needs to outsource their script. It was seriously, epically amateurish.