Template:Translate Completing Achievements gives you rewards in the form of Experience and crowns.
There are 99 Achievements currently available:
Lying the Foundation[]
File:1 Star.pngComplete the tutorial: 10 
/ 
New Barracks[]
File:1 Star.pngBuild your first Barracks: 10 Experience / 5 Gems
To Battle![]
File:1 Star.pngRecruit 15 Grunts: 10 Experience / 5 Gems
Governor[]
File:2 Stars.pngUpgrade Town Hall to level 5: 100 Experience / 10 Gems
File:3 Stars.pngUpgrade Town Hall to level 10: 1,000 Experience / 20 Gems
File:3 Stars.pngUpgrade Town Hall to level 20: 1,000 Experience / 20 Gems
Long-awaited Bank[]
File:1 Star.pngBuild your first Bank: 10 Experience / 5 Gems
File:1 Star.pngBuild 2 Banks: 10 Experience / 5 Gems
File:1 Star.pngBuild 3 Banks: 10 Experience / 5 Gems
Best Storages[]
File:1 Star.pngUpgrade the Bank to level 25: 10 Experience / 5 Gems
Scout[]
File:1 Star.pngExplore any 1 area: 10 Experience / 5 Gems
File:1 Star.pngBuild 2 Banks: 10 Experience / 5 Gems
File:1 Star.pngBuild 3 Banks: 10 Experience / 5 Gems
Capacious Barn[]
File:1 Star.pngBuild your first Barn: 10 Experience / 5 Gems
File:1 Star.pngBuild 2 Barns: 10 Experience / 5 Gems
File:1 Star.pngBuild 3 Barns: 10 Experience / 5 Gems
Reserve Stock[]
File:1 Star.pngUpgrade the Barn to level 15: 10 Experience / 5 Gems
The First Plant[]
File:1 Star.pngBuild your first Mint Gold: 10 Experience / 5 Gems
Rapid Growth[]
File:1 Star.pngBuild a Worker's House: 10 Experience / 5 Gems
Marching Fields[]
File:1 Star.pngBuild 4 Parade Grounds: 10 Experience / 5 Gems
Particularly Special[]
File:1 Star.pngAcquire VIP status: 10 Experience / 5 Gems
Valued Opinion[]
File:1 Star.pngRate the game on Android Market: 10 Experience / 5 Gems
In the Loop[]
File:1 Star.pngLike the game on Facebook: 10 Experience / 5 Gems
[]
File:1 Star.pngJoin us on Twitter: 10 Experience / 5 Gems
Path of Glory[]
File:1 Star.pngEarn 300 rating points: 10 Experience / 5 Gems
Aggressor[]
File:1 Star.pngAttack 5 players: 10 Experience / 5 Gems
Conqueror![]
File:1 Star.pngWin 20000 resources in a day: 10 Experience / 5 Gems
File:2 Stars.pngSuccessfully defend against 250 attacks: 100 Experience / 50 Gems
File:3 Stars.pngSuccessfully defend against 5,000 attacks: 1,000 Experience / 100 Gems
Strike at the Heart[]
File:1 Star.pngDestroy 5 enemy Tow Halls: 10 Experience / 5 Gems
File:2 Stars.pngDonate 5,000 Clan Castle capacity worth of reinforcements: 100 Experience / 25 Gems
File:3 Stars.pngDonate 25,000 Clan Castle capacity worth of reinforcements: 1,000 Experience / 250 Gems
Savage Strikes[]
File:1 Star.pngKill 100 enemy soldiers: 10 Experience / 5 Gems
Explorer[]
File:1 Star.pngUnlock the 5th mission of the Campaign: 10 Experience / 5 Gems
File:2 Stars.pngSteal 250,000 Dark Elixir: 100 Experience / 10 Gems
File:3 Stars.pngSteal 1,000,000 Dark Elixir: 1,000 Experience / 20 Gems
Stars of Glory[]
File:1 Star.pngEarn 30 stars for the Campaign: 100 Experience / 250 Gems
File:2 Stars.pngReach the Master League: 500 Experience / 1,000 Gems
File:3 Stars.pngBecome a Champion!: 2,000 Experience / 2,000 Gems
Governor[]
File:1 Star.pngUpgrade the Town Hall to level 5: 50 Experience / 50 Gems
File:2 Stars.pngDestroy 250 X-Bows in Multiplayer battles: 100 Experience / 100 Gems
File:3 Stars.pngDestroy 2,500 X-Bows in Multiplayer battles: 1,000 Experience / 200 Gems
Economist[]
File:1 Star.pngBuild 3 Mints: 50 Experience / 100 Gems
File:2 Stars.pngDestroy 250 Inferno Towers in Multiplayer battles: 500 Experience / 200 Gems
File:3 Stars.pngDestroy 5,000 Inferno Towers in Multiplayer battles: 5,000 Experience / 1,000 Gems
Mountains of Gold[]
File:1 Star.pngHarvest 100 thousand coins from buildings: 50 Experience / 50 Gems
File:2 Stars.pngHarvest 50 million coins from buildings: 500 Experience / 200 Gems
Sea of Gold[]
File:1 Star.pngUpgrade the Mint to level 5: 100 Experience / 25 Gems
File:2 Stars.pngCollect 15,000,000 Gold in Clan War bonuses: 500 Experience / 100 Gems
File:3 Stars.pngCollect 100,000,000 Gold in Clan War bonuses: 5,000 Experience / 1,000 Gems
Best of the Best[]
File:1 Star.pngYour clan is in Top 10 in the region: 100 Experience / 25 Gems
Miller[]
Completing every currently available Achievement gives a total of 8,687 Gems and 35,320 Experience, which is enough to buy all five Builder's Huts (and then some) thanks to the newly added achievements.
15 Megawatt Shock[]
File:1 Star.pngUpgrade the Hidden Tesla" to level 5: 100 Experience / 25 Gems
Gardener[]
File:1 Star.pngClean up 15 Garbage Plants Experience / 25 Gems
Major Caliber[]
File:1 Star.pngBuild a "Big Bertha" Experience / 25 Gems
Special Stuffing[]
File:1 Star.pngUnlock 2 sheep types for Bertha Experience / 25 Gems
File:1 Star.pngUnlock 4 sheep types for Bertha Experience / 25 Gems
File:1 Star.pngUnlock 6 sheep types for Bertha Experience / 25 Gems
Clan Ties[]
File:1 Star.pngUpgrade the Clan Castle to level 5 Experience / 25 Gems
Soldiers of Fortune[]
File:1 Star.pngRecruit any 15 soldiers in the Clan Castle Experience / 25 Gems
Devoted Player[]
File:1 Star.pngLog in to the game for 7 consecutive days Experience / 25 Gems
High Above Ground[]
File:1 Star.pngUpgrade the Gun Turret 5 times Experience / 25 Gems
High Fire[]
File:1 Star.pngUpgrade the Mortar to level 5 Experience / 25 Gems
Towards Knowledge[]
File:1 Star.pngBuild a Lab Experience / 25 Gems
Border Keeper[]
File:1 Star.pngUpgrade the Watch Tower to level 5 Experience / 25 Gems