I have and currently am. I feel like Pico's School is a nice start to speed running as a whole, its simple, quick, easy to learn, hard to master, etc. I've gotten WR a handful of times, been playing since I was 8-ish (roughly early to mid 2010's), and still love the game to this day. It is nice though to see how a flash game from 1999 is still getting runners to this day.

i dont even know how to get 100% but i like the idea