ZombiU’s Survival mode is so hard that Ubisoft Montpelier almost thought it was unbeatable – but at least nine brave souls have done it. As captured by Kotaku, Ubisoft has hidden messages in-game celebrating those who’ve achieved the difficult feat. Is your name on a wall somewhere? Do share. ZombiU is out now in the US and arrives with the Wii U launch in Australia and Europe this week.