How are facial expressions implemented in this engine since it doesn’t support morph targets natively? Using bones or using a morphing script? Or is there an alternative way?
There are some morph target scripts floating around on the forums, but the “standard” way at the moment is to rig the face with plenty of bones I would say. It`s surely a tedious process and takes time to set up, but well worth it if you do it right 
You could also blend in different normal maps for wrinkles etc. and create a super advanced setup for controlling the bones via scripts, but it will take some effort.
Found this script on the forums.
http://www.unifycommunity.com/wiki/index.php?title=MorphTargets
Can you explain to me how to use it, if possible with an example?
Howdy!
I am planning on experimenting a little with morph targets for head-/face-animation soon, so I`ll keep you updated on my progress. Hopefully there will be a blogpost and project file I can share
Thanks a lot. Really appreciate it 