You need to fix the group select. When you first start a level it's fine, then after a while it stops letting you select any ships by holding down the left mouse button. It makes the game impossible to play..
I love the game, It's just very difficult to play when it keeps stopping me from selecting a group of ships! It's impossible to play sending 1 ship at a time. (I'm using Chrome)
I can't get the medium achievement, I've completed the game twice and I just started a 3rd save to try and get it but even after unlocking all of the turrets it still won't give me it..
I've had same problem as a few other people here, my save disappears every time. Played it 3 times, all 3 times my save has gone. I'm giving it a 1 simply for that reason.
Haha, no we're British :)