This particular run of Metroid uses the password "NARPAS SWORD0 000000 000000" to complete the game as fast as possible. The password starts the player off with every upgrade in the game (minus the wave beam) and gives the player unlimited health and missiles, therefore rendering the need to collect any of these things completely unnecessary and allowing the player to quickly glitch to Tourian. This particular run is not very well optimized, there is a lot of room for further optimization and lag reduction but overall the run still beats the current RTA record as of writing (4:44 vs 4:33) and I am satisfied with it.
YT Link: https://www.youtube.com/watch?v=lZbc9gT2XtI
#52821968774622747 - Metroid - Crash with Password Screen
You can change direction on "first" frames without losing any speed (after starting the game, after entering a room, after picking up item etc)
I decrease my speed earlier before picking up the item so I have a "lower" speed reduction.
I do it twice after picking up the item to get a better jump after unmorphing to spawn platform and to shoot the door 1 frame faster
Notice that I exit the door with L. While this doesn't save time here, it changes Samus' postion once he travels to next room. Obviously if you would go to right, it's faster to move right (as I did at the elevator)
Different OoB ending (edit: also avoided a morph jump)
Juggling lag frame positions without changing lag count by shooting and manuevering differently after OoB
19 frames faster so far. Notice that I've actually had to make 1-2 frame delay otherwise the TAS magically desyncs without any ROM change (the trace log is different however)