Lowest-risk decision
Keep the current base, record the first breach, and change only the layer that failed.
Build a base RNG Base Risk Planner
Use one planner decision per run: protect entry coverage, strengthen the middle handoff, or preserve cleanup near the core.
Coverage handoff
Check whether front coverage hands enemies to a protected middle role before survivors reach cleanup.
Check before using
Treat a full rebuild as the highest-risk choice. Use the calculator result and current in-game behavior before replacing several positions.
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