I decided to do a compilation of my various contest/collab levels from many different occasions. This explains why the levels are so varied. Because of the mix, I've set up many paths for players to approach as opposed to something strictly linear.
I Come In Peace features levels that were built over the span of late 2012-2015 (including my Dark Side of the Kingdom levels and my levels from NinShack), which will explain the constantly changing design choices.
NOTE: As you complete levels, check marks appear in the bottom right corner of the main overworld map. If you've gotten a 100% SRAM file, there should be 22 check marks in all (20 normal exits + 2 secret).
Also, credit is given to the other people for their resources.