ExtinguisherG 20

As I had trouble with kicking them into the water after they are alight,I would either miss to the side or they would go over,I found this a lot easier to get if you run around the top area in front of the valves till you have a group of enemies following you(they usually come in sets of six),then head down the staircase where you started the match(the big set right of the valves when looking at them),leash the valve on the way down then turn & stand at the end of the stairs just to the side furthest from but facing the water,this is the perfect spot as the angle makes it near impossible to miss the water,as they come down the stairs they have nowhere to go but into your boot.Just aim at the water & don't worry bout hitting the fire,if you have the water angle correct they will pass through or close enough to the fire to light them up before they hit the water so you get both hot flashes & fish food.If you still have trouble getting 5 in a wave then wait for wave 4 because you get mostly those green guys with the axes.