The main goal in 100 Doors is to escape the room. Using all the possibilities of the device you need to open each of 100 doors and move the doors to the next Level.
Search for hidden objects, solve puzzles and use an items to do this!
Solution :
Tap the down arrow on the left side until arm is all down.
Tap ingots in the arm.
Tap the ingots on the right.
Tap the up arrow on the right side until the arm moves on top completely