可參考CD2,有附此遊戲的說明書檔啊(manual.pdf, 12 pages)
直接在光碟上,或install之後也可在遊戲安裝目錄中找到此檔,
裡面寫的還算完整,不錯啦(對此類動作遊戲來說)...

容我偷懶一下,以下copy出部份內容...(主要是針對你的問題啦)

The Dagger of Time
============
Whoever holds the Dagger of Time gains extraordinary powers to bend and control the fabric of Time itself, by using up the Sands within.

Powers of the Dagger of Time

The Power of Revival (Rewind): Allows you to undo your mistakes - even your own death - by travelling back in time up to 10 seconds.

The Power of Delay (Slow Motion): Slows down time for everyone around you, giving you a slight but important edge in combat.

The Power of Restraint (Freeze): Stops time for a targeted enemy, allowing you to dispatch him or her with impunity.

The Power of Haste (Mega-Freeze): Stops time for the entire world, allowing you to wreak havoc on all your enemies at will.

The Power of Destiny (Visions): Allows you to behold startling visions of the future.

Using the Dagger
To use the powers of the Dagger, you need to have sand in the Dagger.

Power of Revival
The first power of the Dagger. Press and hold Rewind (R) to turn back time.
When you reach safety, release Rewind (R) to resume play. Each rewind uses up 1 Sand Tank.

Retrieve Sand
Refill Sand Tanks by retrieving sand from defeated Sand Creatures or loose Sand Clouds. Press the Use Dagger button (E) to retrieve sand. Each retrieval fills one Sand Tank.
The Dagger can gain additional powers throughout the course of gameplay.
The more you use the Dagger, the more powerful it becomes.

(太長無法一次post,續下篇...)