I'm ok with the multiplayer achievements. Not too many really. The level 50 one might be a grind but all the others look easy. And who knows you might be able to boost the level 50 one. The single player ones look straight forward and hopefully there's not ridiculous amount of feathers. Flags I think there's only 100.
55 of 57-96.49%
2160 of 2162-99.91%