I platinumed Assassin's Creed Odyssey, all DLC, 100%, every uplay achievement unlocked. Was struggling with harder stuff at the time, so I put in like 450 hours.
I'm pretty sure that was my magnum opus as far as engaging with Ubisoft is concerned. Our concerto reaches its conclusion, a cacophony of hard drugs, playing for like 10 hour bursts and mtx. A Song like ours shall never be played once again.
Never did a playthrough with Alexios, though.