Walk Me Thru Metroid Fusion Part 12 Finale Climactic Showdown
SA-X Boss Fight
You have had plenty of encounters with this guy before (5 of them). Now that you have the plasma beam, it's time to fight him. You fight him in the main room in the Operations Deck.
Phase 1
The way to beat this guy is to blast him with an ice missile to freeze him and then follow up quickly with a charged plasma beam. If you do enough damage without dying, the SA-X will lose stability and he turns into a hybrid of Samus' suit and the hornoad he infected at the start.
Phase 2
Blast it in the face with Charge Beams and stand 2 blocks away from it so its jump goes straight over your head. Defeat this monstrosity and he will turn into an ice beam Core X. If you run low on health/missiles, screw attack through the core-x to send a bunch of parasites flying. When you finally defeat your nemesis, you recover the ice beam...or not as he/she/it runs away into a collapsed vent. It doesn't matter though-you can now go to the operations deck to activate the self-destruct and besides, it's not like you're going to be fighting any metroids, right?
Omega Metroid Final Boss Fight
While you are escaping from the B.S.L. you encounter this guy in your ship area. First, just let him hit you with his claws. This will wipe out all of your energy except for 1 unit. If you had atleast 302 energy, it would take more than Mother Brain's hyper beam from Super Metroid. It will look like you are screwed, but the SA-X shows up, and shoots the Omega Metroid. It gets hit by the same claws, and dies. Now absorb the X parasite, and blast away to his stomach. Watch out for his claws. They are still pretty deadly. They take 1 tank now. It will die with normal shots, and it is the best way to kill it. Remember, you only have limited time to beat this guy. If you stay focused, this fight should be pretty easy. This is the final boss.
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