Experience points (EXP) will be accumulated through the matches. WEAPONs will level up when they reach the required EXP. The WEAPONs with higher rarity can accumulate EXP faster.
Level
EXP
1
0-99
2
100-349
3
350-999
4
1000-1999
5
2000-3999
6
From 4000
The WEAPONs which have high level in rarity and evolution can earn more $ZOMB as rewards for killing zombies.