Mega Man Legends 2 Walkthrough

Dungeon 1: Abandoned Mine
First, follow Roll through the door. In 1F Room 2, head through the north door. You'll find some Zakobons. Defeat them and go through the door. Head east, defeat more Zakobons, and head through the door. Follow the path and get the Broken Model Gun. Head back to 1F Room 2 and go through the door you saw Roll go into. Watch the small cutscene and you'll automatically go to B1 Room 1. Go straight, ignoring the side paths, and enter the door. Defeat the Zakobon and collect the Zenny inside the chests. Exit and go back to the fork. Head south and kill the Reaverbot. Continue and kill the Reaverbot. Head into the door and collect some more Zenny. Exit and head all the way north until you come to a door you didn't enter. Enter and get the Old Hover Jets. Defeat allthe Zakobons that drop from the ceiling, exit, and head back to the door you passed. Enter it and take the elevator to B2 Room 1. Head through the door to find Joe. He says that a large Reaverbot (Jaiwan) attacked him and once it is at full power, it will attack the city. Enter the door to face it. Jaiwan isn't tough. It will mainly attack with a shockwave. Don't get close, or it will swat you away. Circle around it(it can't swat you from there) and shoot at it. Shoot at its "tail"(the pink spike) to damage it more. When it is at 1/4 health, Jaiwan will start using small shockwaves. Keep hitting it to defeat it. It will be defeated in no time. After you beat Jaiwan, return to the previous room to watch a cutscene, and then get the refractor to beat the dungeon.
 * Boss 1: Jaiwan