Hmmm, so I have found a few things out about Metroid:
1. There are 8 Energy tanks total, I missed 2 of them (even though I am sure I scoured the entire map) - I am not sure which two they were, but there is one existing inside a false block in the Kraid room IN the acid pit just above the acid; I would NEVER have found that one =D
2. Starting the game again gives me all of my upgrades (Varia Suit, High Jump, Ice Beam) at the beginning, which means I can play the game again, although much less cautiously, and therefore much more quickly - I want to do it soon since I still have the whole map in my memory.
3. Completing the game in under 3 hours gets Samus to strip down to her underwear, and she will wear that suit upon starting again.
Looks like more Metroid in the near future.
I describe myself as a little dose of toxic masculinity.