The Grunt is just a grunt with a collide box, and set to Object, Grab. It has mass, but no gravity, so it will only travel in the direction you toss it, unless the collider box gets stuffed with (like, it hits a plane). I also made it a wood material, coz those sound effects are nice when you toss it at a wall or door (video is silent, don't try haha).
The stairs is an entity with gravity. Pulling the Lever removes its static properties, thus it falls under the map. It has enough collide boxes to walk on though :3 Once the stairs is out of the way, the beam from Justine (cellman > beam) is pushed up from a timer until it hits a ScriptArea, then is made static.