Halfie Climb Room
|East Cactus Alley Room
Botwoon Energy Tank Room
Maridia Missile Refill Room
One of two rooms where after entering from a previous room (in this case, Colosseum), the door leading to that room will already be closed before the transition has completed. The other room where this occurs is Pink Brinstar Power Bomb Room.
The fastest strat for this room involves charging a spark, getting over the pipe column, and sparking to the right to get through the Speed Booster blocks.
If you miss the spark, you can clip through the Oums by pushing against them, then jumping against them twice while aiming down.