Acquire the Morphing Ball

Acquire the Long Beam

Acquire the Bombs

Acquire the Varia Suit

Acquire the Ice Beam

Acquire your first set of Missiles

Acquire your first energy tank

Acquire the Varia Suit before getting the Hi-Jump Boots

Acquire the Screw Attack before getting the Ice Beam

Acquire all available equipment and open all non-blue doors before entering Tourian (no passwords)

Acquire the Hi-Jump Boots

Acquire the Screw Attack

Acquire the Wave Beam

Gain access to Hideout I (no passwords)

Gain access to Norfair (no passwords)

Gain access to Hideout II (no passwords)

Gain access to Tourian (no passwords)

In Tourian, while having the Wave Beam, open all the non-blue doors and enter Mother Brain's room (don't reset after failed attempts - continue after dying)

Get to the platform for escaping Tourian with at least 777 time units remaining

Discover a new look for Samus

Discover how Samus can be invincible (Note: all other achievements will not work)

Escape from Tourian and complete the mission

Complete the mission in under 5 hr, 25 min, and 20 sec (first loop, no passwords)

Complete the mission in under 2 hr, 27 min, and 54 sec (first loop, no passwords)

Complete the mission in under 59 min and 9 sec (first loop, no passwords)

Complete the mission without dying (first loop, no passwords)

Complete the mission without the Varia Suit and Screw Attack, only 155 Missiles, and 2 Energy Tanks (no passwords)

Defeat Ridley

Defeat Ridley without taking damage (can leave & re-enter room if fail)

Find and defeat what appears to be Kraid

Defeat Kraid

Defeat Kraid without taking damage (can leave & re-enter room if fail)

Defeat Mother Brain

Defeat Mother Brain without taking damage (starts with first missile hit)