Description
Larger and more aggressive than the Larva. They fly faster and have a more robust chitinous shell. They still attempt to latch on but can also charge at Samus.
Phases
None. They have a single attack pattern.
Weaknesses
Missiles are highly effective. Charged shots can stun them, creating openings.
Strategy
Alpha Metroids are best engaged with missiles. Dodge their charges by jumping or crouching. When they are flying around, aim for their underbelly or head. If you have the Charge Beam, a charged shot can momentarily stun them, allowing for easier missile hits. Be prepared to fire several missiles to take them down.
Rewards
Further receding lava level, opening new areas.