Something that I'd recommend that I haven't seen been brought up yet: if you're predominantly using the Manticore's weapons (Executioner, Intimidator, Tormentor, Oppressor), I highly recommend going into the on-foot options and turning off Aim Assist.
Odyssey's Aim Assist works by pulling your rounds to where your target currently is, rather than where it is going. This works fine for the Takada lineup (laser weapons) and alright for Kinematic Armaments weapons (kinetics), but not for plasma weapons due to their low projectile velocity. This will manifest in rounds veering quite noticeably to where your target was when leading shots.
With it off, your rounds will go exactly where you put them, and thus leading shots will be much, much easier as you will no longer be fighting Aim Assist to stay on target - especially with the Oppressor - once you've dialed in your aim.
