Part 20: The Return to Brinstar
Once on the top shoot up to open up a passage. Keep jumping up til the rocks reappear below Samus. Get above the pit and don't enter the first door you see. Instead use the platforms above to get to the next door and enter it. Samus should be in a brown room, nothing should get in your way as it has a few cells, hornets and what room wouldn't be complete without crawlers. After this room will be a green room with two doors. Just keep
moving right and into another brown room. Watch out for the two cells at the entrance and all the other hazards in this room. After this room should be a small corridor that will transfer Samus back to a familar orange room with tiny platforms. A sentry should pop up but shouldn't become an annoyance. A few sets of huge columns with enemies inbetween will get in your way. Once you've reached the purple wall, fire the wavebeam to reveal the
passage. Roll up into a sphere, plant a bomb to boost Samus into the gap. Use your bombs to clear the passage of any rocks and on the otherside is the room where you collected the high jump. We're not too far from the elevator room. Enter the vertical room and move your way up to the ceiling, blast a hole and skip the first door. Climb a few platforms up to the next door, shoot it open and enter. After this room is the elevator room, take it up.