Mega Man V walkthrough

Final Stage: Wily's Machine/Sunstar's Arena
This is the final stage. Collect all the items here, then drop down the long shaft. You'll meet up with Proto Man one last time. Collect his item, then enter the teleporter to face the boss: Wily Arms. First you fight the left Wily Arm. Avoid it as it moves around while charging up the Mega Arm. When it punches the ground, release the Mega Arm at the Wily Arm. Do this 7 times. Now it's time for the other Wily Arm. This one is faster, and it can both grab and fire missles. Do the same thing you did to the first arm. Now you face Dr. Wily in Wily Machine W5, aka the "Wily Dealer".