Yeah the shell skin :)
Also, if you feel like playing a game made by a 14 year old that has been working with Unity for around a month or so now, be sure to check mine out :D
You can unlock the skin by finishing the last level :D
I believe I already finished, at least I can go to the last level in the level selector, although I can finish it again if you want me to
Could be a bug with the credits, it will unlock all the levels and not give the Chell skin. Oops XD
