An easy way to get "The Cartographer", "Snapshot!", "The Director" and "Sharing is Caring".
Go to Forge and edit any map, adding a gun for example is sufficient, then save the map. "The Cartographer" will pop.
Exit and go to the Theatre, load up your run from the Forge, using the onscreen hud take a screenshot, "Snapshot!" will pop, next record again using the hud, even a seconds long video should be sufficent, upon stopping the recording "The Director" will pop.
Exit and navigate to the fileshare and upload either your picture or video from the above and "Sharing is Caring" will pop.
Needless to say these are the only achievements bar "PWND", "Badge" and "Armorer" I managed to get before work today.