Doesn't really sound like chiptune at the beginning.
I think the pitches of the synths are too harsh and they don't have enough interesting qualities. The guitar and drums in the metal part are really good though. You're good at recording them too.
But you need something more "rocky" than a sine wave imo. It's too soft and has a really soft delay on it like a fairy song.
1:08 Then right here you try to use it as chords but it overwhelms everyuthing else.
But you got really nice riffs especially they sound really nice on synth.
1:31 I think I've got the idea.
Could be improved. But a decent composition especially when the guitar gets involved.