Apparently the list of achievements for Mass Effect has popped up on the internet and does contain some spoilers. For those that wish to go into ME3 untainted by spoilers of any kind, you should probably stop reading now. The spoilers aren't really that major, only really giving you a vague idea of what is going to happen. For those who what to see, the link can be found here:
I for one found the multiplayer achievements quite reassuring. It is good that Bioware isn't making multiplayer exclusive achievements and has gone with an approach that allows those who despise all things multiplayer to get the full 1000G.