It took 107 hours, and I only got a completion of 97%, but I finally managed to beat the final boss of Silksong! My hands seriously need some rest after all of that. For the longest time, I didn't think I'd even make it out of the Abyss. I think that's tied with Mount Fay for longest amount of time attempting to get through platforming challenges with each of them taking me about a week.
I just really suck after platforming.
I know that last 3% is like 2 mask shards (I know one of them is the racing against Sprintmaster but I refused to even do that unless I found the other 3 shards), at least 1 spool fragment (no idea where I missed one), a nail upgrade (attempted the flea games but it was pretty obvious I wasn't going to beat the scores), and 3 mementos (if those are even included in the completion percent).
I'm a bit sad not to get to that 100% (I definitely didn't 100% Hollow Knight either, I never even touched the Godhome stuff). But that 3% also doesn't feel like I missed out on anything important (though the nail upgrade probably would have helped in the last fight).
I really enjoyed the game, even through the frustration of some of the really difficult (for me, at least) stuff.