Okay, I've studied this glitch, and unfortunately had it happen to me. I had to redo my whole entire game because of it, and hopefully it won't happen to anyone. This is just a very important warning.
When you're in the Sanctuary, after you have gotten the Echoes Visor, you need to go back to Main Research. So, when you equip your visor, you see that you have to destroy the emitters to open the door leading to the portal.
But, as stated by someone near the top of the page, if you leave the room before you destroy all three emitters, the door won't open, even though you may have destroyed the last one once entering the room again. I've also found out that, even if you had saved recently, the glitch will STILL be in effect. It had happened to me, and I had to restart my whole game again. PLEASE destroy all three before leaving. But I also have another helpful tip.
Know the emitters are there? Have the urge to shoot them before getting the visor? Think you'll avoid the whole process after the fight with Dark Samus AND get the Echoes visor without any problems? (A.K.A Not having to fight those stupid robots, just go up to the portal and go?)
Even if you know how to get the door open, for Pete's sake DO NOT TRY TO OPEN THE DOOR BEFORE YOU GET THE VISOR! The glitch will once more be in effect, and the sour moment will happen when you see that even the emitters were eradicated, the door refuses to open. Hopefully you're smarter than that, right?
Alpha Blogg Problems
I'm pretty sure people complain that the Alpha Blogg is too fast, and the timing to shoot his mouth is extremely hard to master. But the first time I played it was a cinch. Want to know why? If you may have forgotten, you can still use the B button to strafe left and right faster! If you have NOT forgotten, then, to save ammo, here's a tip before you master the Alpha Blogg:
Continuously shooting the Blogg with Power Beam SHOTS (NOT charges) will land more attacks to his mouth. Combining shooting him with strafing left and right with the B button will equal total success.
But, I've heard that the sonic blast that the cutie (to me) shoots is hard to miss. It's not. Like I said, B button strafing. It's not a wide range blast, but it is fast so watch the way it acts before it shoots it at you. ALWAYS keep an eye on the movements of the Alpha Blogg to know when he's going to attack. This is a way to master attacking him, because if you know when he's going to attack, you'll be able to charge your missiles or Power Beam or anything like that. I suggest Power Beam Charges since you never loose ammo and it's as effective as a blast from a charged Light Beam or Dark Beam, believe it or not. Save your missiles for last and remember. ALWAYS STRAFE!
Random Tips for Fights
When fighting an enemy, boss or not, depending on how it attacks, strafing and jumping can be a big deal. Like fighting a Grenchler (my fave) or a Pirate. Strafe when a Pirate shoots at you, jump when a Grenchler charges you, and strafe when a Grenchler or any other enemy trys to blast at you with some beam or something.
Help with Dark Pirates (commanders or whatever they're called)
Always hate it when those dark pirates attack and disappear, leaving you vulnerable? Well listen closely.
Make sure that you equip your Dark Visor instantly when entering a fight with Dark Pirates. You can always see them. But, if you don't have the Dark Visor, then really pay attention to what's going to follow this sentence.
Here's the situation. You're walking into that one area where there's the giant metal bridge leading to the Temple. Your health is low, and you're searching for a save point or you're just looking for missile expansions or something. Then, you hear that dreadful noise telling you; "a fight is about to start. Ha Ha!" The doors lock and the Dark Pirates attack!
Instantly, avoiding their attacks in the process, jump up to the metal bridge and turn into the morph ball. Go to the side opposite of the door. Hide behind the rocks, and wait. The music goes away and the Dark Pirates leave. And there you have it. No more Pirates! I suggest this since I'm pretty sure the majority of you are extremely annoyed by those darn Pirates, and feel that fighting them is a waste of valuable time and even memory, as I always forget what I'm doing when I fight them. Also, if they toss a EMP grenade at you, you won't get hurt! Nice to know how to avoid them, eh?
Notice that last map that you so wish to get? Here's something for you. I'm not sure, but, either you return the Sanctuary energy to the controller, or beat the game to get it, because I was playing the game non-stop as soon as I returned the energy. I really wanted to beat it as fast as I could. But you'll never get it UNLESS you return the energy or beat the game.
Have fun playing!
Jelly Metroid <3