I don`t think this matches to your style of game to be serious. It sounds like a sweating man fighting animals.

I`m not sure if you need a voiceover at all. I would keep the game in 8-Bit sound style. This is what makes it unique.

Ever thought of something like this? No voiceover, but great and unique presentation (and music laugh ).

- http://www.youtube.com/watch?v=CKZAh43I3Qk

- http://www.youtube.com/watch?v=seEU8xdxUfo