Casual N00b has a pretty pumped up beginning to put you in the hype for an awesome track, it does its job pretty well, though the ''Filthy f**king casual noob f*g'' can get slightly repetitive, but well... if you think this song is repetitive, go listen to ''Into Overdrive'' by S3RL.
The melody is somewhat straight-forward but very simple, it might be as simple as Da De Da.
But it's an overall, good song.