Story and voice acting.

It's just temporary; once he finishes the game, he'll start stammering and swallowing words, as if he's in a hurry. So, it seems like the 'Bookworms' recorded the lines for the final missions while hungover. :smile30::cool:

The problem isn't with "Bookworms," but rather that English lines take less time to deliver than Russian ones. Consequently, the dialogue is cut off when the English voice acting should have ended. It's annoying, and it's most noticeable in the "Heart of Nightmare" map.