Completing Achievements gives you rewards in the form of Experience and Gems. Your Achievements will also appear in the Game Center and on your Profile; each Achievement gives you a set amount of Game Center points. There are 66 achievements currently available.
Bigger CoffersUpgrade a Gold Storage to level 2: 10 / 2 gems
War Hero Score 10 stars for your clan in War Battles: 50 / 50 gems
Score 150 stars for your clan in War Battles: 500 / 200 gems
Score 1,000 stars for your clan in War Battles: 1,000 / 1,000 gems
Spoils of WarCollect 800,000 Gold in Clan War bonuses: 100 / 25 gems
Collect 15,000,000 Gold in Clan War bonuses: 500 / 100 gems
Collect 100,000,000 Gold in Clan War bonuses: 5,000 / 1,000 gems
Total Completing every currently available Achievement gives a total of 8,687Gems and 35,320Experience, which is enough to buy all five Builder's Huts (and then some) thanks to the newly added achievements.
Completing the entire Sweet Victory! achievement totals 465 Gems, which is only 35 gems away from the price of the third Builder's Hutby itself.
Leagues and their bonuses
The number of buildings you need to destroy for 1 star and/or 50%