Human: Fall Flat

This trophy is ridiculous and possibly slightly glitched. I've completed this game four times now and this trophy/achievement never took this long. I completed the entire game (including all DLC) except this trophy in just under 9 hours. This trophy required an extra ~15 hours of grinding. Unfortunately there's no way of knowing how much you've done, so you just have to be patient.

My method for getting this was to find a spawn point with a straight line to the edge of the level, then turn the controller upside down so the character is walking forwards constantly. You will fall off the edge, respawn, walk off the edge, rinse and repeat. You will need to leave this going for an uncomfortably long time. I recommend the Mountain level, since you can do it from the starting point. There are other locations you can do it too, including Power Plant on the road near the end of the level.

Other solutions have said that vehicles count, but I couldn't find a safe and reliable method that could just be idled. My advice is to turn off controller vibration and sound in the controller settings and keep the controller plugged in.

Good luck!