The ARC Complex mission houses three Toy Locations. Your collection will be growing nicely, but there's still a ways to go before you have every action figure.
All Toy Locations in ARC Complex
This is found in the opening area of the level. Before you head left to move into the next area, take a right into a small room.
Walk around the column in front of you and the toy is hiding behind it.
This is located in an area where you can see the ARC Complex's Slayer Gate key up to your left. You'll be looking in the right direction in the objective marker is on your left too, as shown on the screenshot below.
Jump across the gap and use your dash ability to make it to the other side. Look to your right to find the toy. There is a Sentinel Battery to your left too, so grab that while you're here.
The third and final toy is the Whiplash one. Head up the stairs of the complex's hotel area. Once you're in the area with the purple lighting, you'll come across a section that has a lot of bent iron girders to your left.
Underneath these girders is a small gap. You'll be in the right place if you can see a chainsaw fuel cannister to your right as you head in. Turn to your left and the toy is here.