I can't say this level has many flaws, but it also doesn't have many standouts. The premise is really cool, but I wish it hadn't insisted on much on being an error level; I think the "error" and "warning" and all of such kind text strings bring it down slightly for me. The level is blue and red for the most part and many of the block designs look quite broken (which I like a lot), you don't have to insist that it's an error level.

I'm also not sure about having a bossfight in a level like this. Taking the theme into account I would've liked to see some kind of "system destroyer" if you get what I mean. Kind of some force slowly decomposing the level and trying to take you down in the process rather than a head on fire chasing and throwing lasers at you. I think most of my distaste for this level comes from the song anyway. I don't like it, but the level certainly does a good job at representing it.

What it's done well is done really well though. I already mentioned that I like the broken designs a lot, and I like how the "real" level before secret way uses completely different colors but preserves the aesthetic. I also like how it keeps going beyond the secret way but gets progressively harder, as to imply that the secret way should not be the real path. Some of the movements and attacks before the bossfight are pretty cool as well.

When the secret way is harder than the actual level:

Cool I guess, the secret way is funny but the rest is pretty average

Really fun level! I like the cool glitch effect used on the block design and the bossfight looks really epic! Gameplay is kinda unsightreadable but that's normal for demon levels. The last 3 coins could use some work but still a really fun level!