Accomplishments you had in video games

[Aquarius]

I once defeated the Omega Metroid in Metroid: Fusion without taking damage.

I have also taken the Missile Tank in the lava in Sector 1 before getting the Varia Suit, as I had three energy tanks. I'm particularly proud of that one.

Congrats man!  Even i wouldn't succeed in this in Metroid Fusion! ^^

Here're some more I'd forgotten when I posted that earlier:

Managed to get to Stage 6 on Easy mode in Gradius Galaxies/Generation/Advance (The name varies depending on region) without knowing how the power-up system worked, and without the Konami Code.

In Pokémon Ruby, managed to catch a Skarmory on Route 113. It's very minor but I thought I'd list it because they're hard to catch in that area. I used a normal Poké Ball. Intend to do the exact same when I replay Ruby and/or Sapphire. I'm nicknaming it Skar.