Are there any complete 2D survival game Unity tutorials?

Did you try searching for your question before you made it? Also, I recommend using a newer version of Unity.

https://www.youtube.com/watch?v=9P5hppNX8es (it's old but it has a lot of episodes) https://unity3d.com/learn/tutorials/s/2d-roguelike-tutorial (official Unity tutorial)

Above the following are good examples, however now unity has a 2D platformer game for download at

https://www.assetstore.unity3d.com/en/#!/content/107098 it has a tutorial here: https://unity3d.com/learn/tutorials/s/2d-game-kit

or you could look at

https://www.assetstore.unity3d.com/en/#!/content/11228 that last one doesn't have a real tutorial. Its more of a demo that you could scourer through the code.