A ghetto ass map of the 4th stage in the normal mercenaries mode. 50% Not sure if it differs for no mercy.
The Map of Mercenaries Rail Yard
Click to enlarge…
Yellow stars are Time bonuses, green stars are Combo bonuses, red line is the ladder, Blue areas are the second floor, white lines are spaces with very little height so you can drop off them.
Excuse the borked proportions as it was done by eye, also missed a white line in the grate on the second floor, where the ladder is, a bit to the east, bottom side.