You can customize your abilities according yourself and you can prepare your skill bar. Create your team with your friends, choose your teams captain, fight against other teams and rank up together by collecting war points. Reach high ranks and take a place in the leaderboard.
Determine roles and war strategy with your team and play according this rules in the arena, trust me this will bring you a victory. Always be in communication with your team while fighting.
This is the long way for become a succesfull so, never give up dust the arena.