Were you looking for something else? Check out the disambiguation page. Strategic Master is a hard difficulty stamp in Club Penguin Rewritten. It can be obtained by defeating 250 enemies without upgrading any of their cannons in System Defender. Gallery The stamp being earned.As seen in a Stamp Book.Add a photo to this galleryStamps of System DefenderEasyGarbage Disposal · Bug OverloadMediumStrategic Success · Mono Mechanic · Tactical Pro · Master Mechanic · Herbert Attacks · Klutzy AttackHardStrategic Master · Tactical Ace · Test Bot Trio · Protobot AttackExtremeTrack HerbertRemovedReady For Duty Retrieved from "https://club-penguin-rewritten.fandom.com/wiki/Strategic_Master_Stamp?oldid=205515" Categories: Stamps Game Stamps System Defender Stamps System Defender Hard Stamps Community content is available under CC-BY-SA unless otherwise noted.