For other subjects related to astro, see Astro (disambiguation). For other masters, see Master (disambiguation). Astro Master is an extreme difficulty stamp in Club Penguin Rewritten. It can be obtained by completing 25 levels, as well as the secret and expert levels in one game of Astro Barrier. Gallery The stamp being earned.As seen in a Stamp Book.Add a photo to this galleryAstro BarrierItemsAstro Barrier Poster · Astro Barrier T-ShirtStampsEasyAstro5 · Astro5 MaxMediumAstro40 · Ship Blast · 1-up Blast · Astro Secret · Astro10 Max · Astro 20MaxHardAstro Expert · Astro30 Max · Astro 1-upExtremeAstro Master Retrieved from "https://club-penguin-rewritten.fandom.com/wiki/Astro_Master_Stamp?oldid=192632" Categories: Stamps Astro Barrier Extreme Stamps Game Stamps Astro Barrier Stamps Community content is available under CC-BY-SA unless otherwise noted.