Step 1: Go to the starting location and do Marco's first mission "A Bright Bouncing Boy - I". You must have reached Chapter 4 and it's only available at day.

Step 2: Sleep until night and Marco's next mission should pop up in the top-right corner of the map "A Bright Bouncing Boy - II". This is only available at night! If it doesn't spawn right away, sleep a few more nights and make sure you got that part of the map uncovered. There you find a building with a big tower. The front door is closed but you can go through the backdoor and meet Marco Dragic inside. Then you have to help him put 3 rods in the ground to gather electricity from lightning.

Step 3: After 2 days return to Marco Dragic's lab from the last quest. He will be dead on the floor and the trophy will pop. You can make a camp via the item wheel and sleep to advance time. After sleeping twice, you must 5 minutes (real time) before you can sleep again. As soon as you see Marco dead on the floor in his lab, the trophy unlocks. You can also pick up his electric lantern as a reward.