Weapon skills can be "evolved" into much more powerful forms (EVO) if the player has the corresponding passive skill and the weapon is at its five-star maximum.
A newly added mission system allowed players to claim more rewards through regular play. Survivor.io Apk 1.4.4 Mod 10X Xp Boost Hileli
Released in September 2022, the 1.4.4 update introduced several mechanics that are now core to the experience: Weapon skills can be "evolved" into much more