Hello, Thank you for playing eiffel tower. In This game your a special agent. Your mission is to climb to the top of the eiffel tower, once there, you must defeat all enemies and take the "green key". After you aquired the green key, climb back down, once on ground level there is a entrance to a cave on the right, you should go there in the beginning to aknowledge where it's located. Thanks -CrazyBanna