Event Achievements
These achievements were made available during Gaia's events. They don't seem to show up in your 'available achievements' list, so if an event is released make sure you keep your eyes out to see if anyone is displaying an achievement you've never seen before. Each listing will state whether the achievement is still available to earn. They are arranged in chronological order, so scroll to the bottom to see the most recent achievements.

Cats vs Dogs
100 Points
"Awarded to those who vote in the Cats vs Dogs poll."

How to get this: First, pick a side in the Cats vs Dogs event (no longer available) and then vote on this poll.
Status: Semi-Available (If you picked a side in the Cats vs Dogs event, you can still vote in the poll. Unfortunately though the event part is now unavailable.)

Valentines Day 2011 Event
100 Points
"Awarded to Gaians who successfully send a Valentine letter to another user in the Valentines Day 2011 event!"

How to get this: Vist the Love it or Shove it forum, and send a Valentine to another user.
Status: Unavailable

Bunny Spotter
50 Points
"Awarded to players of our 2011 Easter event who caught one bunny." ➔ "Keep going! There are plenty more bunnies to catch."

How to get this: Find one bunny during the Easter 2011 event.
Status: Unavailable

Bunny Hunter
100 Points
"Awarded to players of our 2011 Easter event who caught 20 bunnies." ➔ "You've amassed a respectable lagomorph collection."

How to get this: Find twenty bunnies during the Easter 2011 event.
Status: Unavailable

Bunny Hoarder
150 Points
"Awarded to players of our 2011 Easter event who caught every possible bunny." ➔ "It's like Night of the Lepus all over again!"

How to get this: Find forty bunnies during the Easter 2011 event. (This was not actually 'every possible bunny' - there were more.)
Status: Unavailable

Pie Feeder
50 Points
"Awarded to Gaians who give the same contestant 10 pies." ➔ "You get great joy from seeing your favorite contestant devouring pies."

How to get this: Feed the same NPC ten pies in the 2011 summer event, Piehard. This can be slices or whole pies, or a mix of both - you have to feed the NPC something ten times. Check your 'total fed' count for the NPC to see how you're doing.
Status: Unavailable

Pie Enabler
100 Points
"Awarded to Gaians who give the same contestant 20 pies." ➔ "Your generosity is starting to enable the pie-binging addictions of others."

How to get this: Feed the same NPC twenty pies in the 2011 summer event, Piehard. This can be slices or whole pies, or a mix of both - you have to feed the NPC something twenty times. Check your 'total fed' count for the NPC to see how you're doing.
Status: Unavailable

Pie Hoarder by Proxy
150 Points
"Awarded to Gaians who give the same contestant 30 pies." ➔ "You've developed a pathological need to force pies on others."

How to get this: Feed the same NPC thirty pies in the 2011 summer event, Piehard. This can be slices or whole pies, or a mix of both - you have to feed the NPC something thirty times. Check your 'total fed' count for the NPC to see how you're doing.
Status: Unavailable

Pie Pusher
50 Points
"Awarded to Gaians who give pies to 10 different contestants." ➔ "You're moving some serious weight in the pie hood."

How to get this: Feed ten different NPCs pies in the 2011 summer event, Piehard. This can be slices or whole pies, or a mix of both - you have to feed something to ten NPCs.
Status: Unavailable

Pie Trafficker
100 Points
"Awarded to Gaians who give pies to 20 different contestants." ➔ "You're the Avon Barksdale of pie-slinging."

How to get this: Feed twenty different NPCs pies in the 2011 summer event, Piehard. This can be slices or whole pies, or a mix of both - you have to feed something to twenty NPCs.
Status: Unavailable

Pie Scarface
150 Points
"Awarded to Gaians who give pies to 30 different contestants." ➔ "First you get the pies. Then you get the money. Then you get the women."

How to get this: Feed thirty different NPCs pies in the 2011 summer event, Piehard. This can be slices or whole pies, or a mix of both - you have to feed something to thirty NPCs.
Status: Unavailable

Pie For All!
300 Points
"Awarded to Gaians who give every contestant a pie." ➔ "You know how to bring enough snacks for everybody."

How to get this: Feed all of the NPCs pies in the 2011 summer event, Piehard. This can be slices or whole pies, or a mix of both - you have to feed something to each NPC.
Status: Unavailable

Way Too Many Pies
300 Points
"Given to those rare souls with the insane pie stamina to give away 1,000 pies." ➔ "You gave out way too many pies. Way, way too many."

How to get this: Feed 1,000 pies to NPCs in the 2011 summer event, Piehard. This can be full pies or slices, so it is advised that you stick to pie slices in order to save yourself 400,000 gold! At first, the pies all had to be fed to the same NPC, but now it is only your total purchase count which applies.
Status: Unavailable

Pieversity
200 Points
"Awarded to Gaians who give out at least one of every single type of pie." ➔ "You're tolerant of pies of all shape, size and flavor."

How to get this: Feed every flavour of pie to NPCs in the 2011 summer event, Piehard. Any NPC(s) can be fed the pies, and it doesn't matter if you use full pies or slices, so long as you feed every one of the different flavours.
Status: Unavailable

Cheerleader
200 Points
"Awarded to Pie Hard players who cheer a contestant 500 times" ➔ "Gimme a P! Gimme an I! Gimme an E! What's that spell? I don't know! I'm illiterate!"

How to get this: Cheer for contestants 500 times during part two of the 2011 summer event, Pie Hard Vengeance. The cheers don't have to be for a single NPC, you can spread them across multiple contestants if you wish. To get points to cheer, post in the Pie Hard Vengeance forum or throw pies at other posters.
Status: Unavailable

Heckler
50 Points
"Awarded to Pie Hard players who heckle a contestant." ➔ "Boooooo! Booooooooooooo!"

How to get this: Heckle a contestant during part two of the 2011 summer event, Pie Hard Vengeance. To do this, go to the event page and click 'boo' when a contestant you don't like is eating. To get points to boo, post in the Pie Hard Vengeance forum or throw pies at other posters.
Status: Unavailable

Piepitcher
100 Points
"Awarded to Pie Hard players who throw 200 pies." ➔ "Your flying pies have befouled many faces."

How to get this: Throw 200 pies at other users during part two of the 2011 summer event, Pie Hard Vengeance. To do this, go to the Pie Hard Vengeance forum, find a post by someone on an opposing team, and click 'pie user' under their avatar. You will only have three pies to throw at a time, and then you will have to wait a while for more to be 'baked'.
Status: Unavailable

Piecatcher
100 Points
"Awarded to Pie Hard players who get hit with 200 pies." ➔ "You've caught more banana cream than a moonfaced clown at a baker's convention."

How to get this: Have 200 pies thrown at you during part two of the 2011 summer event, Pie Hard Vengeance. To do this, go to the Pie Hard Vengeance forum, and post in threads where people are trying to 'pie' each other.
Status: Unavailable

Hunter
50 Points
"Awarded to Moonrise combatants who successfully kill 25 enemies." ➔ "You've taken out 25 enemies in the Moonrise event!"

How to get this: Kill 25 players of the opposing team during the 2011 Halloween event, Moonrise. To do this, go to the Masquerade 2k11 forum, and click 'Attack' under the avatar of a wolf (if you're human) or human (if you're a wolf). The amount of damage you do to someone is irrelevant - you must be the person to deal the final blow. You can keep track of your kills on the event page. This achievement can take a while to grant. If you check your achievement page and it is listed under 'available achievements' then you have completed it, and it should grant soon.
Status: Unavailable

Healer
50 Points
"Awarded to Moonrise players who heal 50 teammates." ➔ You've healed 50 teammates in the Moonrise event!

How to get this: Heal teammates 50 times during the 2011 Halloween event, Moonrise. To do this, go to the Wolf or Human forum, and click 'Heal' under the avatar of someone on your team. You may heal the same person more than once. You can keep track of your heals on the event page. This achievement can take a while to grant. If you check your achievement page and it is listed under 'available achievements' then you have completed it, and it should grant soon.
Status: Unavailable

Survivor
150 Points
"Awarded to Moonrise combatants who manage to stay on the same team for 24 hours." ➔ You managed to stay on the same team for 24 hours in the Moonrise event!

How to get this: Stay on the same team for 24 hours during the 2011 Halloween event, Moonrise. You do not have to stay alive during this time, but bear in mind that if someone kills you they may be able to switch your team. It may be worth dying and then becoming inactive in the event for 24 hours. You can keep track of your time spent on a team on the event page. Once you have been on a team for 24 hours, you may need to do an action (attack or heal) before it will grant.
Status: Unavailable

Nerd
50 Points
"Awarded to all the clever codebreakers who cracked the Anniversary giveaway puzzle." ➔ Way to go, poindexter! You cracked the secret code!

How to get this: Click this link. The letters 'avarlrnefunpxugurcynarg' were hidden amongst posts in the official 9th anniversary thread. When deciphered, they translate to 'nineyearshackhtheplanet'. Put this at the end of the Gaia URL, and it redirects you to a page where you are awarded the avatar.
Status: Unavailable

Grunny Grabber
50 Points
"Awarded to those who collected at least one Diedrich baby in the Easter 2012 event." ➔ You got one! Now comes the toughest decision of your life...

How to get this: Collect one Diedrich baby during Easter 2012. To catch a baby, you must click on one that appears in the forums, have the Easter Bunny give you one by quoting him in a thread, or catch one in a net in the event flash space.
Status: Unavailable

Grunny Rainbow
100 Points
"Awarded to Gaians who collected at least one Diedrich baby of each color in the Easter 2012 event." ➔ You found every color of Diedrich's babies!

How to get this: Collect all the different colours of Diedrich baby during Easter 2012. Some colours can only be collected in certain ways, so to get one of each colour you'll have to visit the flash space, click on babies that appear in the forums, and make the Easter Bunny give you some by quoting him. To see which colours you have so far, check the event page.
Status: Unavailable

Grunny Harvester
150 Points
"Awarded to anyone who collected 1000 Diedrich babies in the Easter 2012 event." ➔ Your tireless pursuit of Grunnies has been noted and appreciated.

How to get this: Collect 1000 Diedrich babies during Easter 2012. The colour is unimportant. To see how many you have so far, check the event page. (Note: the event page only shows you how many you currently have. If you've spent any babies on items, the numbers will be reduced, but those spent babies will still count towards this achievement.)
Status: Unavailable
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Contest Achievements
These achievements were awarded to the winners of the Best, Worst, Craziest Hair Contest. Only one user in the whole of Gaia has each of them, and as they were described as 'one-of-a-kind', it's unlikely they'll be made available again.

Best Hair Award
1000 Points
"Awarded to the Gaian with the most luxurious mane of delicious, beautiful hair."

How to get this: Be the winner of the Best Hair Contest.

Craziest Hair Award
1000 Points
"Awarded to the Gaian with the most absurd explosion of follicles spilling madness onto their head."

How to get this: Be the winner of the Craziest Hair Contest.

Worst Hair Award
1000 Points
"Awarded to the Gaian whose deplorable and tragic mop of hair is the most supreme affront to the concept of beauty."

How to get this: Be the winner of the Worst Hair Contest.