Have toi ever played on "Non-stop Climax" Mode?

If toi have what's it like and did toi beat the game? What was your experiance like, was it easy, fustrating, did it take toi days to finish etc?

When I first played, I played on "Hard" mode and got my but kick a few time while there were so many enemies i kept wondering if it would ever stop, so when I finished and saw there was a harder mode!...I chickened out, lolXD