REVIEWED By Kep who's attempting to become a Level Judge - Approved
Notes
The way you placed the background objects, general background, and bricks were astonishing, with one exception - they were repetitive. Just like line of symmetry, the three torches were placed EXACTLY in between the four pillars, with the far right and left of the screen looking immensely bland. The bricks to hit Blind shouldn't generate in the same place everytime - it's just way too obvious. Make it a bit more challenging. Don't expect the player to stand in one spot the whole time, beforehand realizing already where the brick is going to come out at. Additionally, on the final few hits, while you have the brick in your hand, the tiny monsters that chase you can break it so you have to wait another while for another brick to generate, while you're still at risk. It's just a nuisance to deal with that. Finally, the music shouldn't play after the boss is dead, which is peculiar to say the least.
Regarding graphical things, Blind's hands look like 3D, which could be awkward. It's like something flying at you temporarily. Somehow, there must be some way to make it to where both sprites can be compatible, so it's not like the difference between 2D and 3D. Also, the torches are gloomy, and everything else is bright. I notice that you want the BGOs to have somewhat of a realism, but it really doesn't work. Lastly, while the head chase guy is spinning, it looks like he only has one eye.
Conclusion
You did an impressive job constructing this custom boss, but some of the graphical things and necessary placement kinda messed up how you could admire the actual boss itself. Keep up the amazing spriting too, since I assume you made Blind the Thief's appearance yourself to fit in SMBX. Overall, what you had was splendid, but I want to see more things professional-wise, graphical-wise, and placement-wise. And now, time for the score!
Points: 7.5/10