What to check first
Marionette in Tiles Survive is described carefully here: it is a separate activity or target where availability, requirements, and results should be checked in the game.
This page does not publish unverified rewards, levels, spawn frequency, or exact mechanics. If the game UI shows conditions, rely on the game UI.
Game window, squads, and state
A visible game window, stable screen, free squads, heroes, and current state control matter for this activity. If the window is closed, minimized, or covered, Helper may not see the needed screen.
A separate squad can be useful if the activity conflicts with other marches, but that should be checked in your current game build and account state.
Tiles Survive Helper role
Tiles Survive Helper can help with repetitive routine around Marionette when the feature is available in your build. It does not promise to always detect the target and does not guarantee automatic completion.
If the activity is not detected, start with the game window, MuMu, scaling, busy squads, and whether the needed game screen is open.