Resistance 3: How to Get the Juggler Trophy
You can get the Juggler Trophy in Chapter 16 of the game. Start with the Cafeteria section, collect all the ammunition and Molotov cocktails you can get your hands on. Keep playing until you get to The Pit area of Gratersford, PA. The Juggler Trophy cheat tip below can be employed once you get to the Pit area. This is where the grims and leeches attack you in a sewer area arranged like a circle with waterfalls.
For this section, try to have the Rossmore with flame-throwing option. It would help tremendously.
First, poison, freeze, and then roast four grims. Do these operations in order but apply them simultaneously to four grims. To get them in one spot at the same time, wait until the second wave of attacks in the sewer. When you hear screams, they will pour in to the sewer circle from a waterfall.
Shoot a secondary fire using the Mutator from the bottom of the falls. The grims will land on that spot. Even if the grims flop over and then bubble out of the ground, this will still work. However, try to freeze these creatures while they are standing upright. Use your Cryogun to achieve this.
Once you have them frozen, fry them with your Rossmore secondary upgrade fire to light them up. Once you get the three operatons (poison, freeze, and burn) the four grims, you get the Trophy. You must get four grims at once.