if you are going to respond to the thread at least do the bare minimum of watching videos of the levels mentioned above, not a single soul wants to see you going "idk :)" on two out of three submissions, watching these would haven taken you 5 minutes at most

The Golden - a tiny bit more interesting than your average top 1 extreme demon, which isn't really an indication of its excellence, more so a proof of abysmal track record when it comes down to top 1 extremes quality-wise. the level is messy, it's hard to see any design work because, just like many other demons around that time, it suffers from a problem of making everything too dark for the sake of enhancing its "atmosphere". there are a couple of parts that I kinda like, but that's about it.

Bloodlust - thought the level was pretty fine up until a rewatch a moment ago, feel like it aged worse than I remember. still probably one of the better designed red hell themed top extremes (which, again, isn't saying much). the art is all over the place: there are various death moon-inspired pentagrams, skulls and then there's that wonky boss, pixel moon that conflicts with core artstyle and edgy lapras for 0 reason, I find all that a bit charming in a "none of these people knew what they were actually doing" kind of way

Yatagarasu - wasn't huge on the level when it came out and still not very big on it, the main issue being that the level bores me a lot. some parts individually look fine and that's as far as it goes.

bonus levels since temp2st got robbed of proper opinions:

Conchetumare x - when it was rated i thought the level was just passable, but it has grown on me over time. there's a lot of very unique visual and gameplay ideas, it's very fun to play and I really like the song. quite easily my favorite nacho21 level

Sculptures - very impressively designed, but just isn't really my thing, can't really even say why. i really like some other levels by flash though, such as dizzying heights, i just don't why sculptures in particular doesn't click with me.

my levels:

Mystic Bounds by gmdmann

Geometrical Insanity by TheDevon

Dead God Cult by Soverney