Mega Man Zero/Walkthrough

The suggested order of the mission was compiled according to the following criteria:
 * 1) Mission 1
 * 2) Mission 2: obtain Thunder Chip
 * 3) Destroy the Train: boss weak against Thunder Chip; unlocks mission for Flame Chip
 * 4) Occupy Factory: obtain Flame Chip
 * 5) Find the Shuttle: boss weak against Flame Chip; unlocks mission for Ice Chip
 * 6) Find Hidden Base: obtain Ice Chip; (boss weak against Flame Chip)
 * 7) Mission 7
 * 8) Rescue Colbor/Corbeau: boss weak against Ice Chip
 * 9) Duel in the Desert: (boss weak against Thunder Chip)
 * 10) Protect the Factory
 * 11) Stop the Hacking: boss talks about previous missions; (boss weak against Flame Chip)
 * 12) Retrieve Data: before clearing this mission, fast-regenerating spiders allow to collect crystals quickly; such enemies disappear once the mission is cleared
 * 13) Mission 13
 * 14) Neo Arcadia Shrine
 * 15) Neo Arcadia Tower
 * 16) Neo Arcadia Core