Original Level Order - Soul Reaver - Legacy of Kain: The Lost Worlds

Original Level Order

Early versions of Soul Reaver used the following sequence of major events for the game's arc:

Raziel defeats Melchiah and obtains the phase-through ability
Raziel defeats Zephon and obtains the wall-crawling ability
Raziel fights Kain for the first time and obtains the Soul Reaver
Raziel defeats Rahab and obtains the ability to swim
Raziel defeats Dumah and earns the constrict ability
Raziel enters the Oracle's Cave to the north of Dumah's territory, fights Kain a second time, and obtains the Shift-at-Will ability
Raziel defeats the Priestess and obtains the Possession ability
Raziel defeats Turel and obtains the Amplified Force Projectile ability
Raziel activates Turel's smokestack and ascends to The Mountain Retreat
Raziel defeats Kain during their third battle
Raziel ascends to the top of the Silenced Cathedral and uses it to destroy every vampire in Nosgoth

The Silenced Cathedral is a challenging area even with the Soul Reaver, so the order of the second and third events was probably swapped to make the game less frustrating.