Maybe I’ve not dug deep enough, but is there a way to track which main and bonus objectives have been completed? I believe there was supposed to be an update which added an easy way to track all of them, but I don’t think that has happened yet.
No. When I was going for the achievement (which is what I assume you are doing), you just have to remember which you’ve done and which you haven’t. Fortunately, they don’t need to all be done in the same playthrough. So you can play a mission one time prioritizing one objective. It’s slow but it gets the job done.
Let me know if you need any tips or anything. Sorry, but there is no tracker.
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> No. When I was going for the achievement (which is what I assume you are doing), you just have to remember which you’ve done and which you haven’t. Fortunately, they don’t need to all be done in the same playthrough. So you can play a mission one time prioritizing one objective. It’s slow but it gets the job done.
>
> Let me know if you need any tips or anything. Sorry, but there is no tracker.
Awesome, thanks for clearing it up 
Yeah, going for the achievement. I think I got most of the easier ones done. Were there any in particular you had a tough time with?