Enemy types:

0 = enemyA - small green top-down
1 = enemyAI - small green left-right
2 = enemyAII - small green top-down then left-right
3 = enemyB - green bomber left<->right
4 = enemyBI - green bomber bouncing
5 = enemyC - level 1 boss

10-13 = meteorsA-D

20 = enemyD - red fighter
23 = enemyE - medium red fighter
26 = enemyF - red bomber
29 = enemyH - level 2 boss

30 = enemyG - gray ufo
33 = enemyI - gray attacker
36 = enemyJ - gray bomber
39 = enemyK - level 3 boss

40 = enemyL - level 4 boss

50 = goodieA
51 = goodieB

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Shot types:

Player:
shotA = machine gun 2 bullets
shotC = red lava
shotD = medium red lava (unused)
shotE = sideway blue bullet
shotG = homing

Enemy:
shotB = simple green
shotF = green+red homing
shotH = red rocketlike
shotI = red laser
shotJ = red semi-homing