Also done: diagonal line (bottom left to top right) many tropes one fandom achievement.
Postage stamp - Against all odds/poor communication skills/power dynamics/ au:royalty - The Once and Future King (Merlin)
There are some fun ones on there. I love fake relationship soooooooooo much. Though I've got highschool au again, and power dynamics again, and what on earth is au:mundane? Oh gawd, Crossover. Why didn't I veto that? I hate crossovers.