Wow! That's quite the list of accomplishments sir. Well done.
Mine aren't quite as lengthy, but here they go:
1) I completed nearly every Topps flagship set since I have been alive, 1983-2023. The only set missing is 1988 because I hate it, but I'll get it from the LCS for $15 someday. I had to trade and build the hard and slow way for a lot of them, but I did it. (2005 took a surprising amount of time; 99 and 2000 were no picnic either, and it took forever to find the 2012 Harper RC #661 at a reasonable price).
2) I completed my 1,000th trade on here.
3) Less significant, but I have over 100 different Barry Sanders cards now (the only player I PC). I slowly added his stuff as fillers for trades and before I knew it the collection had grown.