Review by me.
Gameplay: 2/10
You killed it. First off, there was a lack of power-ups (only 4-5 in a 10 minutes long level which is even hard) and coins (maybe less than power-ups but I don't know). There were some blind jumps and some places which were only 1 block high, so the player can't pass through those if he's big. Also, your recolors confused me, because I didn't know that in certain places there was an enemy, and so I got hurt. Also, don't do
these kind of things. It's just a spam of enemies and I think there are better ways to makes what did you want to make other than that spam. There was also
this area where you have to stay in a SMB3 platform which first fall and then go in a line. Don't do that, as it's difficult to avoid the spikes. I suggest to use a SMW platform. Also, there was
this BGO which confused me sometimes, because it was too close as the block version. I suggest to make it darker. In the part of level after the checkpoint, there were many pointless switch (those blocks you have to hit to progress), because there is no challenge in pressing them and destroy the blockade. The battle with Birdo was bad made and it was boring. I suggest to remove that hammer bros,
it gave me some little problems. The boss was impossible to beat, not because of the difficulty, but because the blocks prevents you from hitting him. Also I suggest to fix the bomb graphic, as there aren't the frames for when it is close to blow.
Atmosphere: 8/10
Here you did a decent job. I liked the design and the recolors, at least those which didn't confe me while playing this level, but I think there should be more than 2 colors. I think you didn't have to change the lava color to green, as it seems more acid. Also the lava doesn't quite fit in a sky enviroment. As I pointed out earlier, there is
this BGO which is too closeas the block version and you should make it darker. The giant fire graphic have 4x4 pixels, and I think you should fix that too. The background was also good, but I don't think the music fits good. I don't have nothing else to say.
Overall: 5. Still average level. I suggest you to make a better gameplay.