Original demo? I take it you're talking about the 338 demo
I mean I hope so, cause that's the one I've checked out.
Differences in retail morpheus and utdemo338 morpheus:
mainly weapons.
inside building:
Retail morpheus has:
ripper, pulse and sniper.
Demo morpheus has:
Shock, Rocketlauncher and minigun.
*Top of the level, same weapons: mini and eightball (rl) and shock*
Down below:
Retail has: eightball
Demo has: Pulse
Changes in powerups:
Retail: body armour, invisibility and one weapon: the redeemer.
Demo: Shieldbelt, udamage (and two medkits)