Yay, my first post on the IWBTG forums! I got the game for the first time on Thursday night, so I've had it for a little less than 4 days now, though I've only been seriously playing for 2 of them. I took the bottom path first, skipped Metroid, as I didn't know it existed at the time, beat KKK (day 1), took the top path, beat Mike Tyson and Mecha-birdo(day 2), and then pushed through Castlevania to beat Dracula before I went to bed last night. On Hard v_v no idea how many deaths I have, as I'm posting from work on my lunch break.
My brother is playing as well, though he's playing on Wuss mode, because he is a wuss ^_^ He's on Kraidgief, if anyone actually cares how far someone got on Medium... I sure don't. He's been busy playing Spore lately, so I expect that I'll pass him up in short order.
In closing, I would like to congratulate the creators on making a game that has made me curse and scream and declare instances of shenanigans than every other game I've played put together. You've accomplished something that I would never have expected of anything, and that's something to be proud of. I salute you.