Daily rewards get reset every 24 hours and you can check to see what missions are available by selecting the 'Objectives' tab. The rewards remain the same every day, below is a list of the objectives that need to be completed in order to finish a daily mission and the reward you will recieve, the number of tasks that you need to perform will depend on your level of experience.
Standard Mission:
Complete one mission from the 'Standard' category.
Rewards: 350 Experience points, 1 intel, 1 Mild medicine.
Legacy Mission:
Complete one mission from the 'Legac' category.
Rewards: 470 Experience points, 1 intel, 1 Mild medicine.
Daily Selection:
Buy something in the 'Daily Selection'.
Rewards: 250 Experience points, 290 coins and 150 wood.
Level Up!
Increase your character's level in Training Room.
Rewards: 370 Experience points, 1 intel, 4 codex pages.
Complete All Objectives
Complete all other Daily Objectives.
Rewards: 850 Experience points, 20 Helix points, 3 DNA Cube Tokens, 6 codex pages and 1 Critical medicine.
Free Cube:
Receive the free Cube from the shop (available within 4 hours).
This task will earn you 250 Experience points, 290 coins, and 150 wood.
Rush Mission:
Perform 3 missions using Rush mode.
This task will earn you 370 Experience points, and minimum 1 Intel and 4 Codex pages.
Treasurer:
Collection of a sufficient number of coins from the Treasury Room.
This task will earn you 250 Experience points, 290 coins, and 150 wood.
Loot Mission:
Perform one or more Loot missions.
This task will earn you 350 Experience points, and minimum 1 Intel and 1 Mild medicine.
Standard Mission
Perform one or more missions in the 'Standard' category.
This task will earn you 350 Experience points, and minimum 1 Intel and 1 Mild medicine.
Legacy Mission:
Complete one or more missions in the 'Legacy' category.
This task will earn you 470 Experience points, and minimum 1 Intel and 1 Mild medicine.
Daily Selection:
Buy one of the 'Daily Selection' categories.
This task will earn you 250 Experience points, 290 coins, and 150 wood.
Level Up!:
Increase the level of your hero in the Training Room.
This task will earn you 370 Experience points, and minimum 1 Intel and 4 Codex pages.
Complete All Objectives:
complete all other daily tasks. For this task, you will get more than 850 Experience points, 20 helix points, 3 DNA Cube Tokens, 6 Codex page, and 1 Critical medicine.