Mega Man Zero/Walkthrough

One characteristic of Mega Man Zero is the fact that most stages are the setting for two missions. This feature is not found in any other game in the Mega Man series and subseries.

Of course, enemies are different during the second mission in the same area; in some cases, the stage is also navigated backwards.

Suggested order
The suggested order of the mission was compiled according to the following criteria:
 * 1) Mission 1 - the Golem
 * 2) Mission 2 - Aztec Falcon: Boss drops Thunder Chip
 * 3) * 12. Retrieve Data - Maha Ganeshariff: in Jackson Mode and Ultimate (Easy) Mode, obtain the weapons earlier.
 * 4) Destroy the Train - the train engine: Boss weak against Thunder Chip; unlocks mission for Flame Chip
 * 5) Occupy Factory - the hydra guardian: Boss drops Flame Chip
 * 6) Find the Shuttle - Anubis Necromancess III: Boss weak against Flame Chip; unlocks mission for Ice Chip
 * 7) Find Hidden Base - Blizzack Staggroff: Boss weak against Flame Chip; drops Ice Chip
 * 8) Mission 7 - the giant mechaniloid: (Stage 2 revisited)
 * 9) Rescue Colbor-Corbeau - Harpuia: Stage 3 revisited; boss weak against Ice Chip
 * 10) Protect the Factory - Phantom: Stage 4 revisited
 * 11) Duel in the Desert - Fefnir: Stage 5 revisited
 * 12) Stop the Hacking - Leviathan: Stage 6 revisited
 * 13) Retrieve Data - Maha Ganeshariff: Fast crystal collection from quickly regenerating spiders disappears from Underground Laboratory after completing this mission.
 * Final stages:
 * 13. Mission 13 - Hanumachine
 * 14. Neo Arcadia Shrine - Herculious Anchortus
 * 15. Neo Arcadia Tower - Rainbow Devil
 * 16. Neo Arcadia Core - Copy X

Code names
At the end of each mission, Zero is given a codename that depends on his performance. There are 18 different codenames, 12 are positive and 6 are negative. Most of the "negative" codenames are the opposite of a positive one.

The four codenames Hero, Superhero, Savior and Immortal are very challenging to obtain. This challenge is feasible in Ultimate Mode only. In order to unlock the Ultimate Mode, Zero has to become a "Collector".