100 Doors Revenge 81, on this level you need to break big rock with hammer, which hammer is use? for clue which hammer use to break the big rock, symbol of signal on the top of the door. if flat (use flat hammer), if up peak (use hammer with have “v” inside – i call arch hammer), if bottom peak (use sharp hammer – reverse “v”). for detail you can check on the picture below

this is the sequence which hammer to use base on the signal clue(from right to left)
1. flat hammer
2. flat hammer
3. arch hammer
4. flat hammer
5. sharp hammer
6. flat hammer
7. arch hammer
8. sharp hammer
9. flat hammer
10. arch hammer
11. sharp hammer
12. flat hammer
