Blizzard added a great number of achievements to the game. It's unsure whether or not these will be the achievements in the retail version but I'm sure most of them will be. The hardest to get ones being the 1000 win achievements could takes months or even years to obtain. Then there are really simple achievements like playing a replay or winning 1 game. I think there might be around 200 or so achievements to get at the moment, which is rather impossible to accomplish within the next couple weeks before the beta goes down.You wouldn't want to do that anyway since everything is going to be wiped.