Astro10 Max was a medium difficulty stamp in Club Penguin, only available to be obtained by members. It could be obtained by completing levels 1 through 10 of Astro Barrier without missing a shot. Missing a shot during an instruction (such as teaching the player about 1-ups, or blasters) did not count as missing a shot. Furthermore, if you lose a life after the level resets when running out of ammo, you can get as many chances as you have lives left to try and go for the achievement if you did miss.
