3, 7 and 10 are just guesses but the rest are true.

1. Chaos although is real name is Garland. Chaos is his monster name.

2. Crystal rod

3. All of these

4. Kain

5. Kills all enemies divisable by 5

6. All of these

7. the creation of the weapon monsters

8. A exemely powerful GF. Best attack in the game.

9. Invincible

10. All of these