Puzzle #161 - Initialism (Castle Wall)

I'm not sure why I've been making a few Castle Wall puzzles lately, though I'm glad I have been because I'm finally starting to really see how clues can combine when making these, without having to put them in and try to work out the implications from there. Originally, the stray 2 left clue in this puzzle had a given color but on my testsolve I found that it was both unique and reasonable without that information, so I grayed it out.

puzz.link interface

Also, if you're on the Puzzlers Club Discord- this will look familiar, because I posted it in the logic race channel. I'm writing this before any solve times are reported, so I wonder what the fastest time will be...