Hello 

Im here to suggest a system named Party System, Combo System and Rebirth System. What are these system's? Well let me explain

2-4 player's can join in 1 party the soul purpouse of the party is to get faster ammo packs.

Combo System more dmg = bigger combo = Bigger Reward (easy to explain)

Rebirth system (everyone know's what it means) basically when hiting lvl 100 you can rebirth back to lvl 1 with all your ap,points,powers,tokens.coins but you get 1 Rebirth Crown basically you can use these crown's to overclock your powers 1 time per power that means if you can upgrade lets say aspirin 10 times then with Rebirth Crown you can make it 11 times

Thank You 

For Reading

Have a Nice Day !