In the interest of making as much of a one-stop-shop as possible apart from collectibles, I've compiled all 28 achievements that aren't related to the two big sets of collectibles into one video.
For LOEK Master, Pedestrian, and Trying to Bring Forth Sanctum 3? you'll have to carry three objects to the pentagram in Goatville. The first is the robot hiding in the blue hanging crate that is suspended from the crane at the construction site. The 2nd is a small statue/object that is sitting in the treehouse near where you first spawn. The final is the house near the starting spot, sitting on a shelf in one of the rooms on the second floor.
Pedestrian and LOEK master pop when you pick up the two statue items. The robot doesn't pop an achievement right away, but when all three are in the pentagram you'll unlock Trying to Bring Forth Sanctum 3.
These three achievements can be seen starting at the 12:30
mark in the video below.