All For One, One For All and Field Surgeon

I really want this achievement and i read up online to get it you just need to complete 1 wave (wave 11 on casual) with everyone alive so if anyone wants to give it a shot comment here. My timezone is from the Philippines so we can work out a schedule.

В чем может быть причина? Игра в определенный момент просто виснет, в диспетчере игра нагружает более чем на 90%. Компьютер вполне современный. What could be the reason? The game just hangs at a certain moment, the game loads more than 90% in the manager. The computer is quite modern....

Sooo, I had this game for a week in my libary now and every time I try to start it, it shows all the opening logos and stuff and then suddenly closes without any error messages or anything. this is with directX 10 aswell as with directX 9 I really need help because I wanna play it :(...

game can freeze or soft lock whatever you call it at any RANDOM moment, I tried to find a solution to solve this problem, but there's in fact NO answers about how to solve the issue. all I can find are posts (similar to this) were people are complaning about the same problem i tried: change graphics settings run a game with fps lock (60) run a game windowed set high app priority run a game as administrator run a game in compatibility mode (windows xp, vista and 7) NOTHING CHANGED I even checked the u...