Now that I can play the 1P levels not under c-lag, I have results:
Hotsprings Village Zone Act 1, 4/10
Definitely has the "my first map" touch on it (as well as all your other single-player levels), but this isn't too bad for one of those. It needs some non-linearity (multiple paths), and it's far too short. The odd spring placement that forced me to strafe in mid-air over a sector was quite neat. The Crawla placement wasn't too bad, either. You also did put a secret (which is a little TOO easy to find =P), which is a good thing.
Hotsprings Village Zone Act 2, 2/10
This is a step downward. Large, bland, flat passageways make up most of the extremely short level, and why does the water hurt you?
Volcanic Valley Zone Act 1, 4/10
Flaws pull this level a bit below average. Also, this level is too short and linear like your other ones, but at least it has slight non-linearity at the end. The first jump over the lava hazard was bad. Either it was instant death or no punishment at all if you saw the Inferno Shield. The spin-dash-into-spring platforming that immediately followed wasn't bad; however, you could skip one platform if you spin dashed a certain way. The rock with fire damage attributed to it was a very cheap challenge, as well as the Instant Kill sector. I'd like more of a visual warning for Instant Kill, though I thank you for making it obvious the second time. =P Also, remove the clump of Jetty-Syn Gunners at the end, they serve no purpose, since you've already finished the level by then.
Volcanic Valley Zone Act 2, 1/10
1P levels are the ones that require most time and effort on, and this level didn't have much of that. =/ This level was very bland and flat. Also, large clumps of enemies and turrets are not a good substitute for sector-based challenges.
==Match==
Frozen Hillside Zone, 0/10
Even as a beginner, you hardly even tried. =/ The level is way too small; the yellow springs also do not make it back up to the ring of ice; it's unplayable.
SA2 City Zone, 1/10
Only two heights to play on. There aren't even regular rings on the top level, and having only one of a certain type of weapon ring is usually bad, because it makes it very easy to unfairly monopolize said weapon ring. Also, too small. There's hardly anything to do except mindlessly throw Red Rings.