The split is about 50/50, and it’s most noticeable in the Market Garden level (once you get to the bridge). You’ll often still have a number of paths available, but it suddenly becomes linear again. However, in what feels like a strong compromise of the game’s freeform approach, once you’ve completed these missions, your spawn point becomes fixed, and you’re off down another corridor-like shaft. If you die at this time, you’ll be given the chance to drop in again, and guide yourself to another more appropriate place.
Each level has an initial group of missions, which can be completed in any order.
