-
- Story does not contradict the Half-Life 2 story-line past that the game takes place in London during the Resonance Cascade.
- Strong Narrative Direction.
- Maps are never like the last.
- Bonus Missions.
- Puzzles are unique from one-another.
- Fire Ax
- 357. or USP Match
- MP-7 or SPAS 12
- Crossbow or RPG Launcher
- HE Grenade