Not bad, I like it when people think to use objects in creative ways to make the layout more interesting. Although there are some annoyingly placed objects or odd might be the better word. The most obvious one is the speed shoe monitor just before the mini boss, seems pointless having it there. The springs, though trying to get creative with them could seem a little dickish from the way they are being used and I'm sure you know what I mean as that's what your going thought when it comes to difficulty. Which leads me to the whole difficulty thing, which, isn't my cup of tea but that's kind of just a s3k thing in general. Allow me to explain, I don't know if its me but whenever someone works on a Sonic 3 and Knuckles hack they feel the need to follow in a similar way to Sonic 3K Master Edition (to some extent). Its like people try to put too much into the difficulty when it comes to designing the layouts, "throw everything at you" if you see what mean. Although difficulty is needed (and I welcome it), it does not define the layout of the level. You need a good balance of gameplay and difficulty and I've yet (with maybe the exception of D.A Garden's hack) to see this in Sonic 3K hacks. But that's just my personal opinion on what I see. More on topic: I would personally like the difficulty to be toned down, and objects to be used differently(like alternate pathways to goodies), maybe add some more monitors, it seemed a little empty. I think chunk wise I didn't see anything particularly out of place which is good, but there seems to be a few "Precision timing" going on here and it could frustrate the player. Keep it that, I hope my insight has helped it someway.