Since all of the Zero games play in a similar manner, the Game Hints deal with only general hints on where to find items and accomplish tasks in that particular game. I have compacted all of my general strategies, tidbits, and tips into this file, along with some other details that may be helpful to people.
The Zero games are side-scrolling action games, AKA platform games. In some cases you can choose the order in which you tackle the levels of the game. If you having troubles with one level, it’s usually possible to attempt to tackle another one instead.
As a player, you take control of a robot by the name of Zero (sometimes known as Mega Man Zero). You select a mission, typically from Ciel or in a mission room, then Zero is transported to the area in question and the stage begins.
Most levels travel from left to right. Zero must move through obstacles—jumping pits, avoiding spikes, climbing ladders, and fending off foes—to find the boss which closes the level. There, he must face off in a one-to-one battle in an enclosed room, where the battle does not end until one of the two combatants is destroyed.
Should Zero perish along the way, and he has an extra life to spare, he will be able to attempt the stage again. Otherwise, you will need to restart from your last save file.
Between missions, you can also explore a (usually) safe region called the Resistance Base. Here, you can talk to people (press Up), enter rooms (press Up), use transport chambers, find hidden items, and so forth.
Once you have completed (or, in some cases, failed) all of the available missions, the game usually advances to “fortress” stages. There are typically four levels of this and they must be played in a predetermined order. After you finish one section, you will usually be returned to the base where you advance to the next fortress stage by selecting to begin the next mission. Alternately you could choose to revisit other stages first to refill Sub-Tanks and find any items you may have missed before continuing on with the fortress. Usually the bosses of the previous levels must be fought again in the fortress, along with other unique bosses. Then, the game ends when the player wins the final battle against the final boss.