Unlock X
Rescue all Reploids in Lava Factory Stage
Rescue all Reploids in Tunnel Base Stage
Rescue all Reploids in Radio Tower Stage
Rescue all Reploids in Battleship Stage
Rescue all Reploids in Deep Forest Stage
Rescue all Reploids in Air Forces Stage
Obtain all Reploids in Cyber Field Stage
Obtain all Reploids in Central Circuit Stage
Complete the Intro Stage
Defeat the Scorpion Mechaniloid without destroying his pincer and tail
Complete the Deep Forest stage
Beat Soldier Stonekong without taking damage
Beat Tornado Tonion without taking damage
Complete the Radio Tower stage
Complete the Lava Factory stage
Beat Flame Hyenard without taking damage
In Central Circuit, collect all Bomb Targets with 2:00 minutes or higher remaining
Complete the Central Circuit stage
Beat Ride Boarski without taking damage
Complete the Battleship Field stage
Beat Splash Warfly without taking damage
Obtain the X Glide Armor
Obtain all Hearts Tanks
Complete the Air Forces stage
Beat Wind Crowrang without taking damage
Complete the Tunnel Base stage
Beat Vanishing Gungaroo and his ride armor without taking damage
Complete the Cyber Field stage
Beat Snipe Anteator without taking damage
Complete the Palace Road stage
Beat Red without taking damage
Defeat Sigma 1st Form
Defeat Sigma Final Form
Defeat Sigma Final Form in Hard Mode
Defeat Sigma Final Form without upgrades, hearts and sub-tanks [Parts and Life Ups allowed]
Beat Red in Crimson Palace
Beat the game under 2 hours IGT [Triggers after Credits]
Obtain all sub-tanks
Complete the Air Forces Stage without switching a player
Use Axl's copy ability to transform into five enemy types in one session without dying
Get rank GA with any character
Get rank PA with any character
Get rank UH with any character