First 20min in the game and I am unable to find first artefact.
Gameplay restarted, tried loading, re-lading save etc. still no artefact. Bugged?! Any ideas?

Are you using the Detector where it shows it in your left hand? You have to get really close where the detector is beeping very rapidly with its blue light flashing fast, then look down on the ground around you. The artefacts pop into existence when you're really close, then disappear if you move a few feet away. Once you see it you have to grab it and then move away from the danger zone.