In the game you are a shapeshifting shape, there are enemies that come from the sides of the screen and you have to defend yourself. You can become any one of the three different enemies at the same time. When you are a certain shape then enemies of that shape won’t try to attack you, and you won’t be able to attack them. You must use this skill to try and survive as long as you can (score based on how many enemies you kill).

Link: http://ludumdare.com/compo/ludum-dare-35/?action=preview&uid=51564