[Phoenix Gamma]

Really? I just finished it, and I never used a walkthrough. It helps to really check every nook and cranny. I also stocked up on Super Bombs and used them pretty frequently. Adam also makes progression a lot easier since he tells you what part of the map to progress towards.

At least it never does anything totally obscure and weird, like how you unlock the water level in Super Metroid. Sure, it was cool, but how was I supposed to know to do that?