(Here’s an Alt take!)
Honestly…
… And I say this with love towards a fellow human being…
Don’t.
Orisa is a horribly made hero whose limitations (the requirement for co-ordination, teamwork, and support) are being diluted in OW2 because they’re just not compatible with how most people want to play the game. And they are traits typically harder to come by in the lower ranks.
Her gun has 150 Ammo. That might sound cool, but it necessitates a few things that make her FEEL horrible:
Her bullets are very small projectiles WITH BULLET SPREAD, so not only do you have to LEAD your shots (because they’re not hitscan), but you also don’t get an honest guarantee of where the shots will land after 30m because they could go off in a X degrees in any direction.
Because she has so many bullets, she HAS to have a long reload time, which is MORE susceptible to being interrupted. It feels too long (as does her fire duration, so it may be a ratio thing).
She also gets slowed while shooting, which, in an FPS game FEELS horrible. To perform your PRIMARY FUNCTION (shooting) and be punished for it is an absolute disaster of design.
Her shield is also the worst of all tanks. It has the LOWEST HP and is completely static, meaning you can’t game it or play with it or bait anything out. The only ‘play’ is to shoot it straight up, but that is limited by map design as well as being highly telegraphable.
Halt! is unreliable against fast targets and will more often than not fail to pull fast or ‘dashing’ targets into its centre–even if you have the line/tether attached.
I know you want advice on how to play Orisa (which will likely be redundant in 6 months with OW2) but I would urge you to rethink.
She’s a slow, monotonous, boring, uninspired, oppressive, fun-sapping dork of a hero.
You might have fun for a game or two, IF those games go well, but eventually you’ll get into games where people just run through your shield. And in those instances you Halt! will not work and you’ll still miss shots for having to lead them from 20m away…
…that is, if course, if you’re not reloading.
Your time and life is precious and finite. Don’t waste either on this insipid, stodgy, low-effort hero.
<3 