Golden brick #1
As Timmy, use the small passage. Once you're up, use the rope to ride to the second tower. On its roof you will find the golden brick.
Golden brick #2
As Barry, shoot the shields shown on the picture. One is on the left, another on the right side.
To get the golden brick, stand in the place shown on the picture (it's the only place where you can shoot the rope).
Golden brick #3
As Claire, walk to the gate and hack the signal. After unlocking the door, switch your character to pachycephalosaurus and destroy the orange brick wall. Behind it you will find the golden brick.
Golden brick #4
As raptor, walk to the left container and hang on the rod. After opening the door, defeat all dinosaurs and you will receive the golden brick.
Golden brick #5 / Race #1
As velociraptor, stand on the starting line and finish the race. Velociraptor is required for performing jumps on the rods during the race. After completing the race you will receive the golden brick.
Worker in peril #1
Walk to the door shown on the picture and, as Owen, open it with a key. The worker is on the other side.
Worker in peril #2
Walk to the place near the container as Billy and take a photo of the raptor in order to scare him away. By doing so, you will save the second worker in peril, Ray Arnold.