I'm going to be submitting this soon, but there are two things I need to test/confirm. "The Big One" seems to be causing a lot of problems. I'm unsure whether it is glitchy or the guide is incorrect. Feedback on how people have unlocked this and when would be appreciated. The other thing is in regards to boosting. If I have 3 players and 9 legendary AI, do I get more XP than if I have 2 players and 10 legendary AI? Obviously with 3 players you would be alternating between 1st, 2nd and 3rd as opposed to just 1st and 2nd... Has anyone tried this?
Done with achievements.
I apologise for any incomplete achievement guides.