Something my friend told me once is that "Every circle in a video game isn't perfectly round." and I mean, duh, and it didn't really bother me but it bothered other people, what the hell is wrong with me?
it's too bad you can't change your username, but I do understand why that's a restriction.
I'm also quite confused with the messages or 'tags' perhaps, that are under many peoples usernames, I wish there was a guide on how all this works.
4 achievements until I have 100% completed Cave Story+, problem is that one of those achievements is Untouchable (Beat the Best Ending with 3 Hp), thankfully the other 2 are simple and just require skill instead of luck (Sacred Grounds - B2) which are the S ranks for Time Attack and Bossrush (oh and the final one is the turbo charge achievement)