Resident Evil 4 Tips

Getting Butterfly Lamp Blue Eyes
Red and Green Eyes are plentiful, but Blue Eyes are very rare. You can get two lamps in the game, so you need at least two blue eyes.

One Blue Eye is always a reward for shooting down the large hive. The get the other one grab all Eyes from the sewer where you first fight the insects. If you don't get a Blue Eye simply restart from the continue point and keep trying until you get the Blue Eye.