· Added a new defense unit [Guardian MK-II], a powerful walking mech that can be moved to other positions for support when needed;
· Added a new intermediate battle map [Mirkwook], which has no mineral resources and can only rely on initial and regular aid funds to build defense lines.
· Balance adjustment: Unconventional chips in the upgrade route of defense tower chips (such as Hammer+Repair) will now appear in evolution mode
