I guess I could add this one in Killzone 2:

Untouchable
Complete all missions on any difficulty level without dying

I even completed it on the mega-hardest difficulty!...or the easiest, you choose.

You think that's impressive?

I S-Ranked every song on every difficulty and got 100,000,000 points in the game.

Took me 3 months.

Best 3 months EVER.

Edit: Sorry clicked reply instead of quote.

@ dtewi

You have bested me. I got an S on most of them, but not all of them. I had a few stupid A's hangin' around. Most of them are on the easy levels. There wasn't enough points to make it worth my while. I just wanted to get the highest ranking. I remember shaking and having dialated pupils for a good hour or two after getting an S on the last song with the Divas.

Friend and I beat the original Zelda by doing the last dungeon first, second last dungeon second, etc.  We had to go to previous dungeons just to get the item needed to progress in the later dungeons.  Can't even remember what the items were, was so many years ago now (22 years ago I think?)

I forgot one of the most recent ones. Completed Order of Ecclesia Hard Mode Lvl. 1 using Death's ring (which boosts your stats but every enemy hit to you becomes OHKO).

Recently would be getting Alatreon's Long Sword and Lance upgraded (MH3). Oh and Jho's Full armor set.

Beating Teenage Mutant Ninja Turtles 1 for NES when i was 5.

Beating Super Ghouls n' Ghosts (one of the hardest games to beat)

Recently, I got all 242 stars in SMG2. I almost got all the awards in Monster Hunter 3.

rachet and clankk going commamdo i coyld beat 2 times a day! which i did do almost everyday