Mega Man X2/Volcanic Zone

The Volcanic Stage
This area will prove taxing for the newer players not yet accustomed to wall jumping, but overall it is still a beatable place and will reward the patient and intelligent player with not only a heart tank but also an Energy Tank.

Flame Stag
This opponent will be a fierce one, so prepare yourself. The main style of attack that Flame Stag uses is to leap quickly up and down his walls, first leaping to one wall and then to the opposite. Thus if you can adjust to how he attacks you can readily anticipate his route of approach.

He will also run along the ground toward you, leaving flames in his wake. This attack can prove devastating, so be wary and try to avoid it by leaping over him. Stag also tends to throw fireballs, the first one high and the second one low. Simply find the right spot and you can easily evade those two, though the wrong spot will result in pain.

If you climb up the walls to try and escape him, staying to one wall, he will chase you right up the wall. This can catch you by surprise quite easily, so be wary.

At about halfway through his health those flames he uses will change color, becoming blue.

If you want an easy victory hitting him with Bubble Crab's weapon will make it so.