I think Enforcer by default write the hit to the serialport so you need either another Amiga (or computer) attached to the serialport (I think the speed i 9600bps, but I'm not sure), or you need a program which catches the output and prints it on the screen. I think you just need to figure out which of all the icons to click to get Enforcer started in such a way that any hit will get printed on screen. Or maybe one had to set a CON: tooltype or something...
I'm sure it's described in the manual though.