The Time Travel Device (pocket watch at the bottom-left of the screen)
Just click on it, select the time you want to be in (the Mayan head for the Mayans, the viking head for the vikings, etc.) and...
First you get the mask from the old warrior. Then you put it on and go to the guard with the goggles and he sill give them to you and then you give them to the guy from 1953 ( 11:00 ).
For some bizarre, unfathomable reason, Herbert George Wells decided to make his lead character- known only as the Time Traveller in the book ( he has been given names in movie adaptations)-anonymous....