Received from: Kenn [Omega - Market district]
Description: You can start this quest during your initial conversation with Kenn (he runs Kenn's Salvage store). If you're persistent enough you'll find out about his problem with Harrot - one of other Omega vendors. Finish the conversation and go talk to Harrot - he can be found in the south-eastern corner of the map. Choosing a special paragon dialogue option will allow you to convince Harrot that he should agree to Kenn lowering prices in his store. Choosing a special renegade dialogue option will allow you to convince Harrot to shut down Kenn's store. If you've chosen a paragon ending you can return to Kenn to tell him the good news and you can also give him 1000 credits so that he could finish his pilgrimage.
Received from: automatically after having a drink prepared by Forvan [Omega - Market district]
Description: You'll activate this quest in unusual circumstances. Go to the lower section of the Afterlife bar and talk to bartender Forvan. Ask him to pour you a drink and Shepard will soon lose consciousness. Wait for the main character to get back up and you'll find out that the bartender has a habit of poisoning all the humans showing up in his bar.
Return to the lower section of the club and talk to Forvan again. If you want to score paragon points you can either inform other patrons about bartender's plans (it will result in his death) or learn more about his motives and then leave him alone (more paragon points). If you want to score renegade points you must force him to drink the poisoned substance. During your next visit to the bar Forvan is going to be replaced by a salarian bartender so you won't see him again even if he's still alive.
Received from: Mordin Solus [Omega - Slums]
Description: You'll receive this assignment from doctor Mordin Solus and you'll have to complete it during the course of one of the main missions - Dossier: The Professor (you can't return to the slums later in the game!). Keep pushing forward (after talking to Mordin and unlocking a new area) until you come across a large staircase (first screenshot). Use the stairs and open a door located to your left (second screenshot).
As soon as you've entered the room you'll see a cut-scene and you'll notice that the assistant is being held by a group of batarian mercenaries. There are two endings to this quest. If you choose a special paragon or renegade dialogue the assistant will be released. You can then reward the mercenaries for a good gesture by releasing them or kill them all. All other variants (attempt to negotiate, giving a signal to attack, trying to convince the mercs that the assistant is not a valuable hostage) will end with assistant's death. Either way don't forget to collect a med kit found in this room.
Received from: automatically after reading a message left on a datapad [Omega - Archangel's base]
Description: You'll have a chance to start this special assignment during the course of one of the main missions - Dossier: Archangel. Enter a room where you'll find Jaroth and several other mercenaries. Look around the room to find a datapad with a message to Tarak. You can continue this quest after returning to [Omega - Market district]. Go to the Afterlife club and show the datapad to Aria. In exchange she'll want to tell you the location of the smugglers hideout and you'll start a new side quest - N7: Eclipse Smuggling Depot.
Received from: Grizz [Omega - Market district]
Description: You can activate this quest by talking to Grizz - one of the guards in the Afterlife club (near the stairs leading to Aria's lair). He won't talk to you during your first visit to the station, but he'll get more talkative after you complete one of two dossier missions on Omega (finding Mordin or the Archangel). Notice that if you choose a special dialogue option (paragon or renegade) you'll have a chance to find out about Aria's true intentions. Listen to the mission objectives, agree to the terms and proceed to the lower part of the club. The Patriarch can be found in a small room inside the club.
This quest can have two endings. Choosing a standard dialogue option will result in the Patriarch leaving the club. You would then have return to Grizz to collect 3000 credits. Choosing a special dialogue option (paragon or renegade) will result in the Patriarch allowing you to track down the bandits. Leave this room and proceed towards the southern exit from the club (second screenshot).
You'll encounter the bandits as soon as you've opened the door. You can attack them without giving any warnings or have a little chat with them. Bear in mind that all possible solutions lead to their death. You may now return to the Patriarch to tell him the good news. Go to Grizz and he'll inform you to talk to Aria. During your conversation with Aria you can ask her several questions about her past connections with the krogan. Sadly the reward will remain the same - 3000 credits.
Packages for Ish
Received from: Ish [Omega - Market district]
Description: You won't have a chance to meet Ish during your first visit to the station - he'll want to talk to you after you've completed at least one main mission on Omega (finding Mordin or the Archangel). Ish can be found to the right of the main entrance to the Afterlife club and you can agree to help him in acquiring datapads from the Citadel and planet Illium.
You can end this quest after finding only one datapad, but I would strongly recommend collecting both of them. If you decide to travel to the planet Illium you can find the datapad inside Eternity bar located in the north-eastern section of [Illium - Nos Astra] (first screenshot). If you decide to travel to the Citadel you'll find the datapad near Saronis Applications store located on the 26th level of [Citadel - Zakera ward] (second screenshot).
You may return to Ish and give him one or two datapads right away (renegade points) or ask him some questions about the information stored on the datapads first. You would find that the data could be harmful to Aria's operations and then you could either convince Ish to change his mind (special paragon dialogue option) or give him the datapads anyway. In both cases you'll receive credits (more if Ish gets the data).