: Towers can be upgraded to level 4, unlocking powerful experimental configurations and charged attacks.
: A high-difficulty mode designed to complement the overhauled research system, providing a fresh challenge on existing maps. 2112td__tower_defense_survival...
: Features an immediate and relentless onslaught of enemy combos, testing the limits of a commander's endurance. IV. Tactical Intelligence: The Fleshomorph Threat : Towers can be upgraded to level 4,