How to play Left 4 Dead 2 and its new expansion. If you’ve reached this point and you’re still interested in trying this title for the first time, you’re in luck. Until next Monday , September 28, you can play it for free. And not only on PC, but also on Apple computers as it is compatible with macOS. Of course, the version of the Easy 2. Normal 3. Advanced 4. Expert 5. Versus See the next sections for more information on what friendly fire does in these game-modes. Easy. Easy is like it suggests the easiest game-mode in Left 4 Dead 2. Sparing you extra information about damage numbers and getting straight to the point: What does friendly fire do in Easy mode? A thorough analysis of the official melee weapons and how to use them effectively. Updated 3/29/15 - Added information to each melee weapon regarding the delay between the melee attack beginning and the first hitray, and also added information about which maps each melee weapon is and is not available on. 2. 4. 2. It was not removed. The location was changed. Nope, they are still in the main menu, just under the campaign section, now besides PvP game mode, all other game modes received a single-player button under their selection as well. "Ellis" single-player button no longer needed (It's pointless to have it anyway) pYdr.