v0.6.2 Version Update

The content of this update

• 3 new defense towers: Shotgun towers, firing multiple bullets at once; Trap, can briefly trap passing enemies; Prism tower, can concentrate light beams and cause extremely high individual damage.

• A new difficult desert map: The sand sea, facing enemies from all directions in the endless yellow sand.

• Achievement system, adding 18 new achievements for challenge, completing achievements can also receive various rewards.

• A large number of experience optimizations, shortcut keys, map labels, defense tower level labels, defense tower brief information, and so on.

• Balance adjustment, reduced money required for level 4 and 5 upgrades, reduced cooldown for Fio and Velonica's skills, and minor adjustments to some defense tower values.