Welcome.I hope this walkthrough useful.Starting the game.
1. get rock and stone on first screen (on the right side)
2. zoom on panda on first screen (get knife hiding behind cage)
3. use knife to cut rope on tree (close to tree trunk)
4. put large stone in water beneath banana tree on first screen
5. use knife to get banana.
6. give banana to monkey.
7. use key to open cage on first screen.
8. hand stone to large panda , that is now free.
9. use red key to free the second panda.
Source: Escape Games 24