Meaning of “Complete 50 challenges in a row using one weapon”?

Question

What is weapon means? or it is just about winning 50 times in a row.

Answer 1

Your "weapon" is the programming language you use within the challenge.
So, for example, you need to complete 50 challenges in a row only using C++.

Answer 2

@Vengat I think you overstressed with the Epic badge recently.

It's the Gaining Experience badge for completion of challenge, not Epic! 😂

Answer 3

And NO LOSSES OR DRAWS in between