Few people farm their own map as BP1. I do. That was played 6 years ago though.
Recently I retried the top difficulty and got a terrible score. At least it passed...But what happend to the life bar on the score screen?
Wrap the string in osu{}. Flag format is osu{[A-Z0-9_]+}.
Life bar spells out flag but it is under screen because y coordinate is negative. We can parse osr file and move up to see the flag easily.
osu{H1D3_UND3R}