The text doesn't appear to be a complete sentence. It seems like it's an excerpt from a larger piece of writing, possibly a walkthrough or guide for a video game called Shadow Warrior.

Based on the context and language used, I'll attempt to break down some key points that might be relevant:

1. The importance of movement in combat is stressed, especially during demon fights.

2. Standing still can lead to death, so constant motion is crucial.

3. There's mention of a specific chapter (Chapter 8) where finding and killing enemies together with powerful weapons like rockets may provide benefits or items.

Additionally, there are some terms that seem out-of-place in this context but might be important for players familiar with the game:

- 'Insane Mode' suggests a difficulty level.

- The mention of upgrades implies character progression mechanics within the game.

Lastly, it mentions different tier levels (Tier 4 specifically) and abilities like Berserk Tier or shockwave powers. These seem related to combat enhancements that can be unlocked as players progress through the game's chapters.

Overall, without more context about Shadow Warrior and its gameplay mechanics, it's challenging to provide a more detailed analysis of these points.

Shadow warrior secrets chapter 3