it was ok... but,
Could've used some more *umph*, y'know what I'm saying? Like, it needed more enemies, maybe more than an assault rifle, and stuff like that. Of course it was great, and I liked the sounds and sprites, but it needed more. Also, it never ended unless you died... so there's something to work on.
Also also, you say the music is from Halo 2 soundtrack, but I dont recognize it... and I have both volumes.