Start recording and submit a better run to SDA.
This is actually my plan. Even if I don't, I've been in contact with another runner who's wanting to do this (My suspicion is that he'll be tackling a Segmented run, and I'll be doing a single-segment).
Even though I'd like to, though, I can't actually do anything about it until later - I don't have any recording equipment until my tax return comes in!
EDIT: Speaking of Mega Man achievements, I've finished my Star Force 3 No Upgrades run after declaring
unbeatable. Why? Simple. Below half health, he has a move that is unsurvivable
unless you have full HP and a barrier active. This takes a ridiculous amount of luck to reach this point anyway, nevermind having a barrier active at that point in time!
It can be done multiple times and there's no way in hell I'm going to be able to whittle down that much HP before he does it again, without some obscene luck.
So I've declared it done. Even
reaching that point was a huge achievement anyway, because after about halfway through, most stuff starts one-shotting you and you need a shitload of luck and skill to survive as is.