It's difficult evaluate a game that...just don't plays!
But this is the most rosy-hopes, 'couse means that you have launched the game succesfully.
Happens that, trying to launch the application, this load the intro and then crash the system when your saved games are synchronizing with the Ubisoft server.
What then? You can wait for: minutes, hours, days and days without play the game that you have bought.
And more: destroyed ships reappears, impossible mission in which you don't know the real objective of your hunting (the notorious "Blockade of Germany"), ridicolous management of the U-boat captain orders that must run through the crew members to select their special abilities while four destroyer are dropping depth charges and a normal, realistic, commander should be at the periscope...and so on!
But this bugs are "nothing", I repeat me: it means that you can play the game and this is not so granted thanks to the "perfect" DRM system and the "wonderful" server of Ubisoft.
Congratulations "Ubi"....now give me back my money!