Samus's Power Suit undergoes significant enhancements throughout the game, directly impacting her mobility and defensive capabilities. Key upgrades include the Space Jump Boots, allowing for a double jump, and the Gravity Boost, which restores normal movement speed underwater. The Dark Suit and Light Suit are crucial defensive upgrades, reducing damage taken from Dark Aether's corrosive atmosphere and providing complete immunity, respectively.
The Morph Ball is a foundational ability, allowing Samus to roll into tight spaces. Further Morph Ball upgrades like the Boost Ball (for speed and breaking certain blocks), Spider Ball (for magnetic tracks), and Power Bomb (for destroying reinforced structures) are essential for exploration and puzzle-solving. Finally, the Screw Attack provides temporary invincibility and allows Samus to destroy enemies and certain blocks by spinning through them, offering both offensive and mobility advantages.