So basically when you play mc with "lunar client" you'll earn XP which will help you level up. At a certain lvl you could get cosmetics.
You might ask: what if they just afk?
Well there could be script that if lunar client detects that you're afk you won't earn any xp.
You may ask how is this useful?
Well more people would wna use lunar client knowing that you could earn lvls it will boost the percentage of people wanting to play on lunar client. Knowing that it's the
1# best free mc client in this current state.