How to complete hourly challenge?

Each hourly challenge is different (although they repeat through out the day.) Go to the Events menu and check the current hourly challenge to see what the requirements are and try to complete those tasks. This may be training troops, building upgrades, research etc.

You can take a look at our hourly challenges schedule to see what events are coming up each day of the week and try to plan for one that you can do.

When you start out in the game completing the full challenge (and getting the 3 reward boxes) will be very difficult, but you can aim for 1 or 2 boxes often to get the rewards. As you progress completing multiple hourly challenges a day will be easy.