NieR

There are 70 quests in total within the game. The game is divided into two halves, once you pass a certain point in the main storyline, you will advance to the second half. When you advance to part 2, all quests from part 1 become uncompletable (Except for the Fisherman's Gambit).

Completing 10 quests is quite manageable. If you see a speech bubble over someones head, it means they either have a quest for you, or are related to a quest. Most side-quests ask you to either grind, fetch, or deliver an item. You should be able to complete 10 quests, without having to go out of your way much at all.

This is quite easy just talk to people to get quests and do the ones u can to view quests press start ----> then down ----> then quests