This is my video of a full (complete) run (all secret items and bosses) of IWBTG (I Wanna Be The Guy). It's devided in 5 parts, so that I could upload 'em all to youtube.
I , sometimes tried to go thru the screens as fast as possible (sort of speedrun or rush it) (also tried some boss rushes) and I made the video so that it would be one continious movement. (no screen skipping/dieing/saving and no pressing s at boss fights).
I also tried not to use any bugs and to play so that people would know where the traps are etc. (Sort of a walkthough)
Although sometimes you couldn't show everything, because that would get you killed and I didn't want that ;).
I did all this in hard mode, but sometimes busted my nuts because I didn't wanted to save at some points to make it look smoother. When I was reaching the end I realised I might as well had tried it in Very Hard mode, but that would probably have costed me a lot more time and since most (sane) people don't even try to go there I thought it would be better just to show it in Hard mode. (I have not tried to play in Very Hard mode and to be honoust I am not planning on doing so :P)
Here's part 2, enjoy.
0:00 - Beginnig, after defeating Mecha-Birdo
0:53 - Taking Dracula path
1:33 - Start third Boss fight (against Count Dracula)
3:21 - Defeated Count Dracula
3:26 - Taking left path
6:24 - Secret Item 3 picked up
6:59 - Start fourth Boss fight (against Kraidgief)
8:32 - Defeated Kraidgief
9:33 - Start fifth Boss fight (against Bowser Wart and Willy)
End of Part 2.
NOTE: You can download the game here