Xenoblade Chronicles 3D Tips

Monster Indicators
If you go around attacking any old monster, chances are that you'll die. When you lock onto a monster, their indicator will be a certain colour based on your level vs their level.

Red: Way stronger than you (stay clear)
Yellow: Just above your level (This will be a challenge)
White: Around about your level
Blue: Quite a few levels lower than you (Easy Fight)
Black: Much weaker (They won't even attack you)