What are challenges and where can i find them

Question

I would really want to play these "challenges". But how do i start one? And what do they mean with using one weapon?

Answer 1

chosing weapon mean to choose what programming language you want to use in challenge.

Answer 2

You need to be on the mobile app btw. Challenges are not available for desktop site.

Answer 3

languages are weapons here. That is which language we are going to have a challenge with. The more clearly you use your weapon while fighting, the better you score will be. That is the more knowledge you have of the weapon, the more questions you answer right and the more XP you will get