All angles are given in Axe's angle system. It follows this scheme :

        192    
   160   |   224
         |
128 -----|------ 0
         |
   96    |    32 
         64         

0 -> aimed white bullets
1 -> aimed black bullets
2 -> goes horizontally, bounces on edges and fires alternatively black and white bullets upside and downside
3 -> fires continuously at 0°, 64°, 128°, 192° and add 4 to angles after each shot
4 -> fires continuously at 0°, 42°, 86°, 128°, 170°, 212° and add 4 to angles after each shot
5 -> fires continuously at 0°, 32°, 64°, 96°, 128°, 160°, 192°, 224° and add 4 to angles after each shot
6 -> fires sequentially at 32°, 64°, 96°
7 -> fires sequentially at 26°, 51°, 77°, 102°
8 -> white laser sweeping 64° around a variable angle
9 -> black laser sweeping 64° around a variable angle
10-> quadruple laser at 64° from each other
11-> up-down white laser sweeper
12-> up-down black laser sweeper
13-> super-fast shooter, stays on left or right of the screen and shoots when it reaches either the bottom or the middle of the screen height
14-> black hole, attracts player and shoots black bullets at 64°
15-> ???