Super Mario World: all 96 exits
Super Mario World 2 Yoshi's Island: 100pts for all stages including extra stages
Crash Bandicoot: 100%
Crash Bandicoot 2 Cortex Strikes Back: 100%
Crash Bandicoot 3 WARPED: 105%
Hot Shots Golf 2: beat every cpu in VS. Mode (except those japanese players)
Jet Moto: unlocked everything
Mortal Kombat 4: unlocked everything
Spyro The Dragon: 100%
Spyro 2 Ripto's Rage: 100%
Spyro Year of the Dragon: 100%
Tomba 2 The Evil Swine Return: main quest and all side quests completed (except for the Tomba 1 exclusive quests)
Tomb Raider 3: all secrets and last stage beaten
Tony Hawk Pro Skater: 100% all skaters in stats and story
Tony Hawk Pro Skater 2: 100% all skaters in stats and story, all gaps completed (this wasn't easy), all cheats, all movies...hell I did everything possible in this game.
Twisted Metal 2: all stories completed
Twisted Metal 3: all stories completed (this was shit)
Wild 9: beaten on all difficulties (there really isn't much to do in this game once you beat it)
Wipeout XL: all tracks, ships, and classes unlocked
Burnout 3 Takedown: 100% (not easy)
Burnout Revenge: almost 100%, I'm missing 2 cars.
Crazy Taxi: completed Crazy Box...>_>
Devil May Cry: beaten on all difficulties with all characters
Devil May Cry 2: almost the same as part 1, but I got bored when doing LCD.
Devil May Cry 3 Dante's Awakening: beaten all difficulties
Devil May Cry 3 Special Edition: all difficulties beaten with Virgil, Bloody Palace beaten
Dynasty Warriors 2: all but 3 characters left to max in stats
Dynasty Warriors 3: all characters maxed in stats, all weapons obtained, all items.
Dynasty Warriors 3 Xtreme Legends: all but 3 last weapons obtained, all bonus items obtained, 1 special costume, last stage, bonus music unlocked.
Dynasty Warriors 4 Xtreme Legends: all characters maxed, all but 2 weapons obtained, all items obtained
Dynasty Warriors 5: all characters stats maxed, all weapons obtained, all items obtained, all items maxed in stats, all characters at 60000 pts.
Gauntlet Dark Legacy: all starter characters at lvl 90 (I know 99 is the max, but I only did it to see everyone's final costumes)
Grand Theft Auto San Andreas: 100% (avoided anything that didn't have to do with percentage...except for unique jumps because those are fun...80/80 jumps btw >_>)
Grand Theft Auto Vice City: 100%
Midnight Club: all cars and tracks unlocked
Onimusha Dawn of Dreams: I did everything except finish critical mode
Onimusha Warlords: all modes beaten, beaten oni puzzle...thingy (forgot the name)
Onimusha 2 Samurai's Destiny: all modes beaten except critical mode (I really need to do this someday), story chart 100%, all costumes unlocked, was able to use all 5 characters in 1 playthrough, all necklaces obtained.
Onimusha 3 Demon Siege: all modes beaten (yes, even critical >_<), all costumes unlocked, all training completed (not easy)
Ridge Racer 5: all cars and models unlocked, all tracks unlocked, all modes unlocked and beaten. 99 lap mode beaten (took about an hour 30 to do, made me glad it was a short track and I got 1st on my 1st try)
Samurai Warriors: all characters stats maxed, all weapons obtained
Samurai Warriors: Xtreme Legends: all characters new stats maxed, all weapons obtained, all endings unlocked.
Samurai Warriors 2: all character stats maxed, all weapons obtained.
Smuggler's Run: 100%
Spy Hunter: 100% (easy ass game, took it back after 3 days of having it)
SSX: all characters maxed, all boards, all tracks, all character trick books completed
SSX Tricky: same as SSX
We Love Katamari: all but 1 planet is glowing (DAMN YOU ZOO!)
F-Zero GX: all GP difficulty modes beaten, all characters unlocked, all endings unlocked, story mode beaten on every difficulty, all tracks unlocked, all parts unlocked, all staff ghosts unlocked.
Mario Party 4: all characters stories beaten...actually I didn't do this, my cousin made a new file and she did it herself, even unlocked the bonus games and such.
Mario Party 5: everything except buy all battle mode parts
Metroid Prime: 100% items, 100% scans (I pity the fool who hasn't done either)
Metroid Prime 2 Echoes: 100% items, 100% scans (I did both my first game)
Resident Evil 4: all modes beaten, every gun unlocked, 300K in Castle on Mercs!
Shadow The Hedgehog: 100%...except for all endings (I'm not doing that shit)
Sonic Adventure 2 Battle: 180 emblems, all immortal chao created
Sonic Adventure DX: Director's Cut: all emblems obtained, all missions completed, all GG games unlocked.
Sonic Gems Collection: 100% gallery, all games unlocked
Sonic Heroes: I broke it into 50 pieces and sent each one to a different country randomly with a note detailing how to destroy said piece.
Sonic Mega Collection: all games unlocked (very tedious, but you get Ristar!)
Sonic Riders: story mode completed, all missions S ranked
Soul Calibur 2: 100%
Super Mario Sunshine: 121 shines get!
Super Monkey Ball: all floors unlocked and completed
Super Monkey Ball 2: all floors unlocked and completed, everything else unlocked, all 99 lives bought. (for both this and SMB1, I still haven't done maximum play points like Miles has...that wonderful bastard)
Super Smash Bros. Melee: 100%, except for all special messages (fuck getting 1mil Vs matches)
Viewtiful Joe: all difficulties beaten, all characters unlocked, have not beaten it as Alastor :(
Viewtiful Joe 2: same as VJ1, except there are still some Chambers I've yet to unlock or beat.
Sonic and the Secret Rings: everything except for all titles
Metroid Prime 3: Corruption: 100% items, 100% scans, all bonus content bought, all difficulties beaten
Super Mario Galaxy: all 242 stars
Tomb Raider Anniversary: 100%...3 times >_> (I'll do it again and again and again...)
Super Smash Bros. Brawl: everything except for all stickers...and 2 days ago, I gotten the 4,999 Vs. Match message
Mega Man 9: all DLC bought...>_>
I'm not going to list games that I've rented or borrowed.