During your latest mission you found an interesting artifact. It seems that it has some special powers and could take you back in time. But first you have to figure out a way to activate it to open a time portal. Then you can decide if you want to travel back in time or not. This is a very dangerous mission. Once you get back in time, you will have to figure out a way to get back to present times. Explore the ancient times in search of useful things and don't forget why did you went there. It's dangerous to change things in the past, so be careful. Collect useful items and figure out how to escape. Best of luck!
Walkthrough for Time Trouble