100 Doors Runaway Level 15 Walkthrough:
1. Pick up the hammer.
Use the hammer to tap the red button (NOT the reset button) on the machine in the bottom right.
See how many taps on the button to make each colorful square disappear.
Tap the reset button if you lose track.
Red square = 4
Green square = 2
Blue square = 5
Rainbow square = 7
Press the keypad and enter 4257.
2. Proceed to the next 100 Doors Runaway level!
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