I am giving this game 3 stars only for it's multiplayer game. Unfortunately, as is usual with games using the Arma 2 engine, the singleplayer is full of game breaking bugs. For example, early on in the singleplayer campaign, you are asked to unhitch an artillery cannon so it can be deployed. However, you just can't do it! You have to use the middle mouse button or the enter key to perform an action but no matter how many times you press both, there's no response whatsoever! And that's if you manage to get the action to perform up on screen in the first place! I tried climbing onto the cannon, crawling underneath it, shouldering my weapon and then trying, but I couldn't even get the action to perform up on screen. It took about half a dozen times of quitting and then reloading the game before I finally managed to get the default action up on screen. But then as I stated above, no matter how many times you press the middle mouse button and/or the enter key, absolutely nothing happens.
I have unfortunately come acrosws this kind of thing happening before when I bought Arma 2. Just one example of the bugs in that game came when I tried to order a helicopter to come and land and transport my team to another area of the very large map. Even though I was trying to get the helicopter to land in a large, empty car park, it continually crashed into the surrounding trees and buildings whilst trying to land! When on about the 20th attempt it did finally manage to land, my team all got fatally wounded whilst trying to board the helicopter!
Also in Iron Front (as in Arma 2), the expressionless faces of your team mates are still just as poor as they were in Operation Flashpoint from the same team many years ago. When they talk, they look like ventriloquist dummies with just the bottom lip moving up and down and no proper lipsync whatsoever. It's such a shame because without these problems, these could be among the very best examples of the first person shooter genre as they contain many great ideas and features. But the bugs are so serious that it's hard to believe just how these games came to be released in such a state. It's as though they were not play tested at all!
However, the multiplayer is great fun and not prone to the kind of game breaking bugs found in the singleplayer portion of the game. Well not that I've found so far anyway. The 5 patches that come with the game's release on Gamersgate is a sign that there have been big problems with the game. So hopefully, there will be one that sorts out the problems found in the singleplayer campaign. But as no such patch was forthcoming with Arma 2 or it's expansions, I wouldn't hold my breath.
So if you are only buying this game for the multplayer, then I can recommend it. I found it much more enjoyable than Heroes Of Stalingrad which had been my favourite multiplayer WW2 shooter up till now.