when you have placed the acorn, Now have Reemus stand in front of the left-most hole in the middle screen's tree, Leave the screen and come back so the squirrel reappears.
With the squirrel in hand, walk to the left-most point of the cliff. with this you can't get the bugs. + so everyone can see
Bertam: Solve the puzzle at 2nd floor of tower
1. Solve the puzzle of star 2. Solve the puzzle of triangle 3. Solve the puzzle of moon 4. Solve the puzzle of heart