After you get the golden vase from the cave in the Vikings time period, go back one time period to Ancient Greece. Talk to the museum guards and give the vase back, and you will restore the time...
The gold vase is in the Norse time period. You have to get the gun powder from ancient china then blow up the rocks in front of the cave. When you enter you will be holding a torch. You have a...
There are solvents and acids that will dissolve gold, but not many. And they aren't "over-the-counter" products. Aqua regia, a mixture of hydrochloric and nitric acids (3:1) will do the trick. But...
The golden vase is in the cave in the place where the vikings are. You have to get the gunpowder in the China place first. Then go up where the cave is in the viking place (the front of the cave will...