TF: fold the back and the waist out the back of the beast and the drill at the front. Find which shoulder the robot arm with a hand is connected to and swing that round inside the body so the arm is out to the sides. Unpeg the drill and the antennae at the front and again swing round inside the body so it forms the other robot arm. Fold the insect legs up revealing 2 pegs - we'll come back to them - then fold the front of the beast onto the robot's waist. Position the limbs.
Ball joints at knee, hip, shoulder, neck and the arm with the the hand on. The other arm has a bending joint in the middle for the antennae as the drill. Roll your finger along the bottom of the drill to get it to spin.
Right what about those pegs ? They're not needed in beast mode, they don't lock into anything in robot mode - in fact they get in the way a bit. So what are they for ? They match holes on the back of the robot legs which would be in the right place in beast mode for the posts to slot into *if* they pointed the right way - which they only will if you lift the legs up. My guess is that it's some sort of abandoned vehicle mode with the beast legs raised up and the drill pointing forward. Either that or it's a huge mistake on Hasbro's part !
Decent enough beast and robot. Drill's nice.