Quick answer
Enter Colosseum only after checking your live path, placements and inventory. Watch the first moment disruption or concentrated pressure breaks your coverage, then change one decision at a time.
Chrono Warfare TD is still described as unfinished and in development. This guide therefore treats the live client as the final authority for menus, stage availability and changing balance. It does not infer wave counts, tower costs, damage, enemy health, drop rates or rewards from incomplete footage.