Achievements

(All numbers with an *  are estimates due to lack of proof at the moment.)

Daily Tasks
Daily Tasks are small quests that get reset every day at 00:00 UTC. On completion, they give you a small amount of rubies and if a Daily Event is running, the corresponding item as a reward. The quests come in multiple difficulties with whom requirement and reward vary. You unlock higher quests when you reach the corresponding Company level. (Known quest levels are 2, 5, 8, 9, 12, 16, 52.)

List of Achievements
All achievements when completed reward you with an amount of rubies equal to the level of achievement you have. Level 1 = 1 ruby; Level 2 = 2 rubies; Level 3 = 3 rubies, and so on.