I used an original route, that saved quite a bit of time compared to the usual route. I found a nice shortcut in Norfair that saved 2 to 3 minutes. Ridley and Kraid battles are extremely short.

I abused a few glitches: the door trick, morph jumping, bomb boost jumping. I also use morph jumping to pass through blocks a few times, which I had never seen or heard of before.

I took hits whenever avoiding them was impossible or whenever it would slow me down more than a few frames. I also used them to my advantage in certain situations. I manipulated monster item drops quite a lot to get missiles.

I used a password to get suitless Samus. The password does nothing else.