Pressure Mine is a neutral psych exclusive to Egg Bomb. To activate it, press the bottom center portion of an obstacle. The obstacle will be marked for a limited time and will trigger when a non-blocking enemy nears it. Additional damage may be dealt from the minute obstacle movement after detonation. Interestingly, this additional damage is treated as positive rather than neutral. Note that mine detonation will not destroy an obstacle. Pressure Mine is categorized under B class.