that synth hits hard, nice job

Ah man this starts out so strong, but the same old loop gets a bit stale by the end - I really want to see this grow into something more!

That percussion is tight, giving me shades of Knuckles' theme from Sonic 3 which I LOVE. Good buzzy bass bendies, that's really helping to drive things forward.

I appreciate the little breaks that start cropping up around 1:00, I just wish they came a bit sooner, and lead into something new afterwards!

Very cool drum/synth loop. The interplay between bass and drums, combined with the reversed/sucking sounds is very effective, everything really gels together super well. It is super compressed but that sounds good for this kind of music.

I agree with blockblockblock that I would love to hear more development/variety. Even if you don't want to add melody/harmony, you could still add a bit more structural interest by dropping out elements for example.

This might be just my system/personal preference but I think you could boost the sub bass (~50Hz) even more.