Wow! The game is awesome!
Very original use of theme, enjoyable gameplay and really smart use of glasses. I noticed some bugs, but they are minor and do not spoil the impression. Firstly, in some places the scientist can made a soft lock and you should kill him to restart the level. Secondly, sometimes enemy glasses are stuck in a wall.
I really like a progression that you made and behavior patterns of enemies. And the scientist is not annoying as it often is in escort missions. Thus you have made really good job!