Counterstrike is an online video-game based on real-world weapons and realistic combat situations. Each player enters the game as a terrorist or counter terrorist and then proceed to blast, bomb, slice stab, char, and generally kill the heck outta the other players in the game. I can have more complicated game goals, but its main appeal is that it everyone in the game is a real life person not a computer character, and it has realistic wepons people are familiar with. Someone mad a Mod (modification) for the game to have the mele weapon be a SOG SEAL knife, wich I think was a cool idea and wish I had done it myself.
Actually what I think was thought of as the "Half Blued" effect of this picture is is the "Skin" in the model. The skin is a 2d picture that wraps around a 3d model to give it detail. Think if you had a block of white plastic in the shape of a seal knife, then you painted the color, checkered handle and light relfection on it with a paitbrust to make it look like a real knife....thats a skin.
One of the things about skins is that you have to fudge lighting effects because the knife wont actually be "Shiney in the game. In the game the knife would be held edge down and pointed forward making the shadow on the bottom and shine on the top. But when the knife is pointed like this it make the lighting a bit unrealistic so it looks like it is blued instead of a shadow.
Skins are my speacialty hence the name Skinwalker" (also a navajo shapeshifter that also fits the theme of what I do, making crazy game characters)