Peter still had some great vocals on this album.
Some songs I cannot listen to, while others are among the best in the Hypocrisy catalogue (track #3, seeds of the chosen one, another dead end)
The songs that I cannot listen to are only like that because of the Nu metal riffs involved. It is obvious that Peter was into that kind of music at the time, and probably let his other influences leak into hypocrisy a bit too much.
There is no way to rerecord Catch 22 and have it sound like a different genre, the nu metal riffs would have to be replaced.