The Guide

About
The Guide is the first boss encountered in the game. He gives you a bit of info about the game, such as controls, a tutorial, and a bit of an explanation as to why the character is where he is and what his goal is. He's considered to be a very easy boss.

Behavior
Normal Mode: He shoots four bullets every 60 frames. One bullet travels directly at the player, and the other 3 fire off in 90 degree increments from the angle of the first. He moves 125 pixels at a time in short bursts every 150 frames.

Hard Mode: Same behavior as normal mode, accept he has much less health and there are four of him attacking you all at once.

Strategy
The strategy for this boss is pretty simple. Dodge his attacks while shooting at his body. If playing in Hard Mode, try to focus in on one boss at a time until it's dead, and then move on to the next, etc.