1. the OP wants an EU save, which I wouldn't even be able to do because I have the US version. 2. Someone did upload a save and people have tried it and it does not work.
Have you gotten to any checkpoints at all? The end is 3 waves. First, zombies with dexter's darlings (SMG chicks). Second, testers (pink dudes). Third, Space marines and the 2-d guys. you dodge welleslys laser a few to get to a console. I watched a video of the end on max hazard while i was trying it and it seems most of the time you just gotta get lucky with how the game spawns the enemies.