Deja Vu Canals Stage 1 is the first level of the second world. This level introduces the Keropper.
Red - In the tunnel by the first Chrono Blob.
Silver - Suck up the water in the pool on the left near the goal gate. Shoot at the treasure chest to get the medal.
Gold - On the platform with the Keropper, suck up the water and climb the ladder which leads to the medal.