Tonight in WoW, I managed to gain 14 achievements in a single evening. Most of them came from the Argent Tournament: I’d saved up all the remaining Valiant Seals I needed (100 of them), and gained champion status with the four remaining cities one right after another, for eight achievements. Turning in the last one also got me three achievements for reaching Crusader rank with high enough faction. And then the last three came from finishing off the Noblegarden achievements, once I tracked down a female dwarf and gnome.
Now that I’m a crusader, I can do two more dailies for champion seals, which now lets me get seven seals per day fairly easily (ten if I do Chillmaw and the citadel, too). After a bit of experimenting, I also determined that I can get off two shield-breakers during jousting while the opponent is repositioning, which makes the fights go much faster, so now I can start doing the champion jousting without it being too tedious.