Achievements are similar to Goals wherein they provide players some tasks to complete with Crowns as a reward. These achievements could be considered milestones which will help the player keep focused in their growth.
If players are in desperate need for Crowns (if they’d want to Revolt or purchase a Peace Treaty), then completing these Achievements are important.
Each category of Achievements has around three tiers to complete--with each higher tier providing bigger amount of Crowns as a reward. The first level tier of Achievement usually provides around 5 Crowns as a reward.
Lumberjack - Clear Trees or Rocks
Manifest Destiny - Clear Forests
None Left Standing - Destroy defending troops in Multiplayer Battles
Never Surrender - Successfully defend your town against attacks
Total Victory - Destroy Town Centers in Multiplayer Battles
Robber Baron - Plunder Gold in Multiplayer Battles
Harvest Heist - Plunder Food in Multiplayer Battles
Drill Sergeant - Research 24 Troop Upgrades at your Blacksmith
Medal of Honor - Collect Medals
Knowledge is Power - Research Technologies at your Library
Lend Lease - Donate troops to your Allies
Gathering Blessing - Collect Food using the Gathering Blessing
Loot Blessing - Steal resources using the Loot blessing
Divine Providence - Purchase Blessings from the Temple
Multiplayer Win Streak - Win multiplayer Battles in a row
Mercenaries for Hire - Purchase Mercenary armies from the Mercenary Camp
David and Goliath - Win attacks against opponents with more Medals than you
Timed Quest Master - Complete Timed Quests
League Ranking - Join the Kingdom League
Oil Raid - Plunder Oil in Multiplayer Battles
Take Flight - Train Airplanes for battle
On the Offensive - Destroy Bunkers in Multiplayer Battles