After two pretty easy levels, a little more effort and patience is required to reach the target for this one. Hoping you’ll find it interesting and enjoyable!
ah I see, cuz I thought the monster in level has similiarity to a monster in "Relic" movie which also set place in museum and most time setting happen in the night. Spoiler: I M A G E
Spoiler: Walkthrough Part 1 The first part is the most tricky. In the upper part of the skeleton there’s a hidden free object (not draggable). By the square draggable visible in the head of the skeleton you can drop it on the floor inside the tunnel created by the lower part of the skeleton. You have to combine the movement of B and the square draggable so to push the free object in order to lead it until the corner where you see the rotating lever.
Spoiler: Add In other words, you have to tap on the grass outside the skeleton and immediately drop down the free element by the draggable on top so that B push the free object dropped just in front of him (by autopilot) on the wall at the end of the tunnel. So the slider can push the free object until the corner where there is the rotating lever.