The Aegis, Equalizer, and Firepower Packs do contain new weapons and armor, but the game is absolutely beatable without them.

The Alternate Appearance Packs are purely cosmetic. They won't screw up your save games, and your save games will still work if you have to re-install (unless you're trying to load a save game in a DLC area).

You may download and install these at any time - before starting a new game (except for Genesis), in the middle of a game, or even at the end.

This page contains quest information only on the Downloadable Content packages.

To fully explore the conversation, you should choose 'Anger at Shadow Broker' before investigating 'Liara's needs.Nightsolo's Mass Effect 2 Downloadable Content Nightsolo's Mass Effect 2 Downloadable Content Investigating her anger about the Shadow Broker leads to Liara mentioning that the Broker wanted to sell Shepard's body to the Collectors. Warning: Choosing the 'Liara's needs' investigate option inexplicably ends the conversation and doesn't let you say 'Good luck, Liara' or 'Don't give into temptation.' In either situation, you can tell Liara, 'Don't give in to temptation' for 2 Paragon points or 'Good luck, Liara' for 2 Renegade points. If not, Liara informs you Nyxeris had some interesting data on her and was well-compensated to boot, so she gives you the spy's credits. If you picked the wrong person, Liara will tell Shepard that the other agents have gone to ground and she will continue her search. The rest of the morality points in this assignment are earned during your closing talk with Liara in her office.

Return to Liara to conclude the assignment. If you correctly deduce that the Observer is not one of the five, you get 5 Paragon points, and Liara beckons Nyxeris to her office to deal with the spy herself. If you wrongly identify one of the five as the Observer, you earn 2 Paragon points. Liara then deduces that her assistant, Nyxeris, has been feeding her misinformation, and is a double agent working for the Shadow Broker. Selecting this option leads to Shepard informing Liara that the Observer is female, whereas all of the possible suspects are male. After hacking the fifth terminal, you can call Liara, and a new dialogue option becomes available: 'None of the suspects fit'.

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