Biggest gaming achievement?

What is your most stand-out gaming achievement, could be getting 100% in any given game or simply beating the first level...

For me, It would definately be Defeating the Lich King in Icecrown Citadel 10-man mode in WoW. It may sound pathetic but nothing has ever made me so excited and generally satisfied with my feat.

Secondly would have to be getting all the masks in Zelda:Majora's mask, the great deity mask was one of my most sout after items and finally recieveing it was such an immense sense of personal satisfaction (Also I was like 10 at the time hahaha)

So tell us, what moments made you just crack a huge smile and gave you an extreme surge of satisfaction

The first time I ever finished a game! It was Atic Atac on the Sinclair Spectrum. (Made by the guys who later became Rare)

Great Game!http://en.wikipedia.org/wiki/Atic_Atac

It was a 3on1 match I won in the poor-peoples-FPS WarRock.

The opponents were from the same clan and during the last matches (we had more players in the session then) they already proved that they were much more skilled then I was. Then all my teammates left the room and it was 3on1. I won the round, probably because i'm a MGS/SC-lover and was superior in hide-and-seek tactics. That match was so intense, I jumped straight up from my chair in ecstasy. :3

My biggest achievement in gaming would have to be the completion of Halo: Reach on Legendary.

Arguably winning an entire match of BFBC2 solo on team deathmatch against 1 squad of 4 and 2 squads of 3 (I think they had their squad set to private because it wouldn't let me join)

or

beating Sephiroth in KH 1 and 2 (that felt good)

or

playing through some of the levels in Demon's Souls without dying once on a first playthrough.

Completing every scenario on the 2006 FIFA World Cup video game.

That took some serious perseverence.

getting my whole team safely off the collector base in Mass Effect 2 on Isanity on my 2nd play through and listening to that epic music as the normandy escapes

Or another 1 was banging Miranda Lawson on Mass Effect 2 aswell hehehehhe

THo one of my biggest ones was having an army of 2500 british on empire total war and holding a hill until my ammo ran out and using bayonet charges against over 12000 maratha in darth mod lol i had 352 remaining

getting my whole team safely off the collector base in Mass Effect 2 on Isanity on my 2nd play through and listening to that epic music as the normandy escapes

Or another 1 was banging Miranda Lawson on Mass Effect 2 aswell hehehehhe

THo one of my biggest ones was having an army of 2500 british on empire total war and holding a hill until my ammo ran out and using bayonet charges against over 12000 maratha in darth mod lol i had 352 remaining

I'd have to go back to the NES days and say beating TMNT. That felt great.

Finally beating Persona 3:FES (The Journey) after about 60 hours of gameplay. Also getting the match winning kill in CoD MW2 with a riot shield. Man that felt great.

Probably getting a killstreak of 20 against a Godlike bot in Unreal Tournament 3. Those bots are just crazily fast.

Building a decent raiding guild in WoW. We were never a top guild or anything but I took it from myself and 4 friends in crap gear to a guild of 50+ people doing intermediate level raids during TBC.

It was a rediculous amount of work over the course of a year or so and in hindsight a really big waste of time. I did way higher level stuff as a member of other guilds but this was by far my biggest personal achievement.

Mine was beating Tyson in the 2nd round in Punch Out without receiving damage.