The first tab is for the daily("il-il") challenge. It is reset at 6 am every day.
The first 2 challenges are:
- Do Tower of Chaos 5 times
- Do Chaos Abyss 1 times (You need to be in a guild to do that).
You needn't to win to realize the challenge. You only need to participate (you can even retreat).
The second tab is for the game challenges.
Here 2 rewards are available:
- the first one for the level 5 of our main character
- the second for hiring 3 heroes.
Touch the button on the right of each rewards to get it.