Super dynamic! Really great to listen to.
You have a real talent for creating polished music in a very short time.
Now for the technical points: the rising sound that serves as a transition is good but overused. For some transitions, you could simply stop the drums a few bars before the next section starts, which would allow for some variety and doesn't take long to do (especially for someone who loves speedrunning like you).
In any case, I love the NES/chiptune vibe without the chiptune sound—it's a really cool sound.