There are 7 epic mission arcs, a level 1 arc called 'The Blood-Stained Stars' featuring the Sisters of Eve, a level 4 epic mission for each empire faction and two level 3 pirate arcs for the Angel and Gurista factions.
In the past I have completed Penumbra and The Blood-Stained Stars but now I am planning to complete all four empire arcs. And I am going to complete them all with the same character.
To start one of the arcs you need 5 standing with either the faction or corporation that starts the chain. Standings I do not have at this time.
Raziel has the following standings:
Gallente Federation 3.33
Federation Navy 7.35
Gabrielle, my gallente alt has:
Gallente Federation 1.76
Federation Navy 4.52
To start I have Gabrielle do some datacenter missions and then turn in about 25 million isk worth in serpentis dog tags, making my alt standings:
Gallente Federation 3.29
Federation Navy 6.69
The goal of turning in dog tags and doing the datacenter missions is to increase standing with the Gallente Federation to at least 3 so I can then accept level 3 (Impetus) missions.
While my alt is busy with the datacenter missions my main locates an Impetus agent and runs a few lvl 3 missions. As I am fleeted the rewards for the three missions are split so the reward below is just half the mission reward and bonus.
The Black Market Hub x2
291k reward + 273k bonus in 0.5 sec system.
267k reward + 229k bonus in 0.7 sec system.
Rogue Drone Harassment x1
245k reward + 198,5l bonus.
Raziel: Impetus 1.98 (0.45)
Gabrielle: Impetus 1.98 (0.45)
Had I just started out running lvl 1 missions for Impetus I probably would have had higher Impetus standing by now.