I looked over the tech demo for the commercial version and noted some things the Devs might want to correct.

1 - Going into the weather room there is a crash, the message is: Crash in roomP_startRain: snd_play (snd RoomPRain 2,100) and the sound gets louder.

2 - In the water room, if you move out into the water to swim, in 3rd person view she is half way above the water and when you stop moving she just hangs their in swimming mode. The characters body should be mostly under the water with her head up and when stopped she should drop to a upright 'wadding' position. Arms moving front ot back to keep her floating.

3 - In the Light room, thats beautiful except when the mage starts shooting fireballs his arms are at his sides, his arm should be up when he lets go each fireball.

4 - Also the ground should have a finer texture, it looks blurred and unattractive.

These suggestions will made the demo much better.