Animating in endorphin is very very easy, you just need to have either motion capture files to import on the character or animation files and an idea of what you want.
What you basically do is take a mo cap clip, and modify it with endorphins behaviours (which is called dynamic motion synthesis) and posing tools.
Its posing tools are great, you can have a pose, set the character in another prose at a different keyframe and endorhpin will do the rest, its not like setting a key in say maya which would animate the movement in a liniar motionm the character willl try to get into the pose with his own physical stregnths and movements keeping human motions and physical limits in mind.
It can create complex animations say, falling, hitting the ground, being hit by a car, being blown up etc etc in seconds
Only downside that I can find is that for good looking sequences you need to have quite a bit of mo cap that you need for the various "linking" parts.
Worth getting the PLE and the free tutorials as it comes with a lot of mo cap data with it, but i think your limited to what you can export.
"No pressure, no diamonds" Thomas Carlyle