z3filus

Why should it be impossible?

Good question. I've never ported a model, so from my pov I assume this would be difficult. This particular outfit would be ideal for one of my projects. Generally speaking, this HITMAN game has lots of interesting outfits that could work just fine in a Star Wars game. 

That depends entirely on what you are willing to do to make this model work ingame.

You can always retopologize a model, like I did here (left) for Willemoes Jester Model (right).
I rebuilt the torso using retopology tools to get better edgeflow for rigging. This method can also be used to reduce the geometric detail of a model significantly while keeping clean topology and more or less the same shape as the original.

This takes some effort but generally gives much better results than decimation.
In this case I also reprojected the textures from the original model onto a completely new UV set to make working with the textures a lot easier for anyone aiming to reskin this.