Press the arrow keys (left or right) until the top lock clicks then use the opposite arrow until the second lock clicks then the third lock can be in either direction you have to figure it out by yourself (it's best to tap the arrows rather than hold)
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i found it, its 6, 22, 4
6, 22, 4 (safe house)
12, 1, 19 (gun shop)
(villa coming soon)
The combination is 6-22-4
13457
4 22 6
20,8,0
4526
6-22-4
12,1 and 19
13457
not very much.
18 22 try to figure out the next one
6-22-4
6,22,12
1st 12,1,19
no there is not cheats for sift heads world 5
You twist the safe knob in the order 6,22,4 (safe house)