So just got the game n loving it so far, been about 2 years since I played the original. This should have beenough the game to start with back in 2014, I guess they learned from it and/or used it as a 3 yr beta.
Back to topic, I have a few questions:

When out anywhere, why does ghost icon appear at top right when I'm walking around? In the map, I know the secret areas are those with the 2 upside down Us and dot, what are those cross shaped things on the map? What are the different kind of chest?
I turned in coins but can't get the legendary engram, when wI'll I get it?

Any good tips on starting would be good, Im a warlock btw....thanks for help...