PRTS 下半/PRTS盟约记录 鸭爵 备注 「每回合将有0~2名敌人被替换为上述敌人之一」. 1000 real waves (m._normalOpts, solo and co-op, rounds 5-12): 0 / 1 / 2 swaps 388 / 312 / 300, never more; two of the same kind in 81 of the 300 2-swap waves. Golden unchanged. Tests: test/sim/feedback5-cb4-pins.test.js (+1). Docs: DESIGN §25.18.8.