You didn't upload your files, you put links to locations on your C: Drive on your computer, so we can't download it...

Please use the uploader: https://nsmbhd.net/uploader/
And then edit your post above with the links to the uploaded files

Edit:

Okay, I did see you update your post with the patch.

I have to say though that the levels look almost exactly the same as the original levels, only lightly edited, and that's a huge sign of a hack with not enough effort put into it. It's much better to delete everything in the level and then make it from scratch.

I did like the custom music in World 1-2, and also the Snake Block idea in the same level but I think the platform is a bit too small? Just my opinion though. It was tough trying to get the 1st Star Coin and get back on the Snake Block platform, if you missed it then there's no way to progress and you have to fall off.

So far I've played up to World 1-Fortress

I can't get over the fact that this was done. Seriously, well done to everyone who worked on making this possible

I did find a desync in World 2-Castle, in the desert part there is a Bullet Bill spawner (sprite #55) that activates only for that person when they go near enough (in the screenshot below, Mario has gone close enough to the spawner but not Luigi). It also affects the Bill Blaster next to the ? switch.



Also, if a save happens after a desync, you can fix it by copying one of the save files from one DS to the other.

Just tried it out and yes, that's exactly what it does.

Also I messed around with this a little and found out if you change to it shows his other animation (doesn't rotate his head at all)