By the late game, especially after acquiring the Space Jump, Cross Bomb, Power Bomb, and eventually the Metroid Suit, Samus becomes an incredibly powerful force. The Space Jump grants infinite aerial mobility, making platforming trivial. Power Bombs clear entire rooms and reveal hidden paths. The Metroid Suit transforms Samus, granting immense beam power and the ability to absorb X-Parasites for health and missiles. Your 'build' is now focused on overwhelming enemies, exploring every corner of the map, and preparing for the final confrontations with maximum firepower and resilience.
