Board Thread:Shadow Fight 2 Discussion/@comment-24329676-20141230093931/@comment-25669516-20160216205823

You have to finish all Acts + Interlude first. When you reach Act VII and complete its Chapter 1 and 2 Titan will automatically unlock if your game is updated to the latest version. Also note that Titan update is not yet available on Windows but if you are on Android or iOS and still can't unlock Chapter 3 after finishing everything it's probably a bug.