There are many collectable flags throughout the game of Assassin's Creed and every time one is collected, you get a progress indicator (e.g., 33 of 100). Is there any reason to collect these, other than bragging rights? I recall getting all available flags in one particular town and never saw any special reward or secret revealed.

2 Answers

The point is only to get the achievement. You don't unlock anything by collecting them.

There are 4 achievements associated with flags:

1. Keeper of the lions passant - Find all of Richard's flags in the Kingdom
2. Keeper of the creed - Find all flags in Masyaf
3. Keeper of the four gospels - Find all flags in Jerusalem
4. Keeper of the crescent - Find all flags in Damascus

4

The only usage for these flags is to have a save point in-game in case you die.