: A high-difficulty mode designed to complement the overhauled research system, providing a fresh challenge on existing maps.
Success depends on selecting the appropriate engagement level: 2112td__tower_defense_survival...
: Progressing through the campaign allows players to unlock new weapons and abilities via a tech tree. A major overhaul to this system was implemented to include more upgrades and better balance. III. Operational Modes : A high-difficulty mode designed to complement the
