Not quite. Using barrier chips prevents damage, and using a 500Barrier program advance in conjunction with a Sanctuary gives you 1000 extra HP. Invis will hide you from most enemies (notably NOT the Killereye family), mole will help hide you between attacks, shadow will hide you from everything except for swords. Auras make you invincible to varying amounts of damage (100, 200, 300 at a time) but eventually wear off. The only remaining option is to obtain a grass style with a grass stage and undershirt. That way, no hit on you (unless you only have one hp) will kill you, and you'll constantly regenerate life from the grass stage. Don't use this when fighting a fire enemy, for obvious reasons.
One you can do without GameShark/etc is get a wood style, install undershirt, and use grassStage. Voila: You can't die unless you're hit at 1 hp, but the grass regenerates your health to 2 as soon as you hit 1. Invincibility.
go to www.google.com and type in gameshake codes for megaman battle network 1
The GameFAQ's site has a section for Megaman Battle Network 3 that includes multiple walkthroughs and FAQs and some cheat codes. SuperCheats has an extensive and well-organized list of cheats for the game, as well as tips.
nkw=invincibility oms=no reload nkw=invincibility oms=no reload
depends
A1: you dont need hacks A2: I don't think if you can use your own characters, try using game shark? But cheats/hack sucks! xP
This is important: Invincibility B83EA1 Look on YouTube. type a search in Google for cheats lots of websites give you all the cheats
Cheatcc is where cheats are.theres cheats for invincibility, no weapon overheat, and a bunch of other stuff
unlimited ammo: Rambo invincibility: Rocky
Visit the mmbn 3 cheats and codes section of gamefaqs.com to find out. Or, it may be available in game from an NPC character.
You niglet.
supercheats.com
no there isn't any cheats yet but some might be made