Assaulting the Collectors' home base after passing through the Omega 4 Relay.
If you don't get Jack's loyalty she will die on the final mission.
legion
Yes, it does, if you don't complete Legion's loyalty mission on Mass Effect 2 he won't survive The Suicide Mission, therefore he won't be in Mass Effect 3 and he is replaced by a AI of Legion.
No, you do not need to upgrade the medical bay to have a zero casualty last mission in Mass Effect 2. The med bay will just get rid of facial scaring.
If you mean the "800 blocks" on the Citadel, then yes, you will go there as part of a mission.
No. He (can, if he survives a certain mission) be in your party, but you will not be able to play as him.
If he died in Mass Effect 1 then he is not in Mass Effect 2. If he survived Mass Effect 1 he shows up in Mass Effect 2 but he can not be killed.
$500 tops
Mass Effect 2 is a 15.
You need to say the right things to said character and you have to be nice to them and do their loyalty mission...
No, Mass Effect 2 has a completely different weapon system.
mass effect 2 will be