Sadly, I spent most of my weekend trying to import an expensive player character model into UE4 and utterly failing at that. :\ In any case, I’ve managed to modify the default set-up just a little bit (mainly by changing the player and pistol models):
http://vimeo.com/nikumubeki/neotodoa0001
I tried changing the rifle and shotgun models as well, but for some reason for 25% of the time they worked properly and for most of the time something buggy was going on (as if the bullet projectiles were getting stuck inside the model or something), even though i did add the proper MuzzleFlash and LaserSight sockets into the skeletal meshes and even adjusted the locations of the muzzle flashes in the player template.
Also, I tried changing the enemy characters to the Matinee demo’s Trooper model (as with the player character), which had worked in the Side Scroller Template as well, but for some reason the enemies stopped shooting at the player (aiming, yes, but not shooting) and the editor message log got full of messages. Currently I’ve restored the rifle and shotgun to the default ones and changed the enemy model back to the mannequin, but I’m going to want to take a shot at replacing them (or at least the enemy model) again later… I’ll try to post step-by-step reports of these bugs when I can.