The keys are obviously a quite important part to the game and a part that is likely to cause a bit of trouble for some people so I have started to write a fuller guide then the one that follows to the locations of the keys. However, for now, the following section of the guide will tell you in which levels you will find each key half... RED CHEST KEY Half of the Red Chest Key This is one half of what appears to be some kind of chest key. I got this from Sgt. Byrd after helping him rescue soldiers in the Byrd Barracks. We have both halves of this key, so we can open red chests now! Half of the Red Chest Key This is one half of what appears to be some kind of chest key. Agent 9 gave this to me after I helped him on his mission in the Thieves' Guild. We have both halves of this key, so we can open red chests now! GREEN CHEST KEY Half of the Green Chest Key This is one half of what appears to be some kind of chest key. Sgt. Byrd gave this to me after his rescue mission in the Dragon Shores! We have both halves of this key! We can open green chests now! Half of the Green Chest Key This is one half of what appears to be some kind of chest key. I got this from Agent 9 after helping him sneak around in the Banana Savannah. We have both halves of this key! We can open green chests now! PURPLE CHEST KEY Half of the Purple Chest Key This is one half of what appears to be some kind of chest key. I got this from Agent 9 in Moneybags' Mansion after helping him on a mission. We have both halves of this key, so we can open purple chests now! Half of the Purple Chest Key This is one half of what appears to be some kind of chest key. I got this from Sgt. Byrd after helping him on a rescue operation in the Rhynocs n' Clocks land. We have both halves of this key, so we can open purple chests now! YELLOW CHEST KEY Half of the Yellow Chest Key This is one of what appears to be some kind of chest key. I got this from Agent 9 after helping him on his mission in the Cheetah Spot Spa. We've got both halves of this key, so we can open yellow chests now! Finally! Half of the Yellow Chest Key This is one half of what appears to be some kind of chest key. I got this from Sgt. Byrd when I helped him rescue penguins in Ripto's Chateau. We've got both halves of this key, so we can open yellow chests now! Finally!