Mega Man Battle Network 2 Tips
If you want to get an S rank when fighting FreezemanV3, go to the Kotobuki Apartment Complex and jack into the security lock. You should find the chip Guardian. It's electric based. Now go find Freezeman in the Undernet and as soon as you start battle, use Guardian. (Make sure he isn't in his ice shield.) When his ice cicles hit the Guardian, it will punish him. It does 200 damage regularly, but he is an ice Navi, so it does another 200, and he is on an ice platform, so it does ANOTHER 200 damage, which almost kills him. Then use a combination of ZapRings and Satelite3 and you will beat him in less than 30 seconds.