Arrival deals with, yes the arrival of the reapers into the galaxy. Shepard infiltrates a Batarian prison in an effort to rescue a human agent who has evidence of the incoming reaper threat. You play alone without your squad from the game in what amounts to a corridor crawl. No new characters of interest are introduced and there are no significant decisions or revelations made in this dlc. Unlike lair of the shadowbroker, you do not have a love interest with you this time. This greatly disappointed me as I wanted some Ashley action to match the Liara stuff from Shadowbroker.
The dlc took me 53 minutes to finish, and is very combat heavy. There is a decent turn which makes Shepard a criminal and this could be brought up in Mass Effect 3, but overall this dlc is short, boring and brings nothing to the table. Its completely missible ane I can recommend it only to the most ardent Mass Effect fans.
Its a mirror image of bring down the sky for Mass Effect 1. The ending leads straight into Mass Effect 3, but at 560 microsoft points is it really worth it for less than an hour?
Pros: More Mass Effect
Fight Batarians
1 interesting development
Finally Admiral Hackett appears in person
Cons: Corridor crawl
Barely an hour long
No moral decisions
Wtf: The alpha relay? why did Mass Effect 1 need to happen at all then?