I did not started this account as a challenge with low level or anything, level 6 is just from naturally playing the account. But I think it is still pretty cool to share especially only cards from Arena 0-2 are used. This is the deck:
Goblin Barrel 8
Baby Dragon 7
Spear Goblins 5
The Knight+Barrel have higher levels because I request them so my main account/clanmates get star points. Reaching 3000 is the final goal for max request already.
It was quite a struggle in the range 2800-2900, 3000 is about the limit that I could reach anyway. 134 wins to reach 3000, so it is still quite a short and fun journey overall.
I have no idea how people gain the 2 year old achievement badge when they are still in Jungle Arena, they must love the jungle a lot.