Expose his core by shooting at him several times. You should see it open up, and once he starts taking itty-bitty bits of damage from your teeny-weeny little buster (unless you have Guts style), unleash your rage with crazy powerful battlechips! But, metagel and areagrab are useless, so beware of using them, and don't hit his claws--hit his core. It will close up from time to time, so you'll have to keep shooting it.
You have to have beat alpha and you need 100 chips in your library. then you go to where you got the gigfreze program and press a on the giant hole
By defeating the life virus in Wilys Lab
Just follow the storyline. Essentially, beat Alpha, and you'll "beat" the game, although subsequently there will be a lot of extra material. This question is better resolved by visiting a walkthrough, for which I recommend using gamefaqs.com
You dodge his attacks and use air shoes to stand on the spaces he breaks out
i dont not if this is right but you must beat bass in nebula hole 6
Beat Flameman alpha in Undernet 5. You will receive his V1 chip. For more advanced FlamMan chips, beat his beta version at Yoka 1. Use oilbody to make things faster. Equip collect in the navi customizer to ensure you get the chip.
Expose his core by shooting at it several times, then attack. You'll have to repeat this throughout the battle. His core should be bright purple and wide open before you start trying to damage him.
If you mean hate, then I can explain why. People hate Megaman Battle Network 4 because in order to beat the game, you have to start a new game (a harder level) to get souls and chips you need. That is very annoying and it's just terrible. Chips, libraries, and other important things aren't lost when you start a new one, but you have to battle the boss and final boss 3 times is very just horrible. So, some people just skip that game and some don't. Even if it's bad, it's still a Megaman Battle Network game.
random battle in astro waves
you beat crimson dragon or if you want full completion you beat Sirius and get all battle cards
It's located in the Secret Area, only accessible after you beat Alpha. It's also behind security of some kind, whether a door, security system, or obelisk I don't recall. If an obelisk, you'll need the hammer from Undernet 7, but that's a different question.
You have to beat the number 1 first with a single blow having the same attack power as it's HP then the number 2 will turn to number 1 and just keep doing it