Enemy List And Weaknesses:
Spider: Can be squished by Hades block, no bullets work
Slythex: An immobile turret like bug, try breaking it out of it shell...
Turret: Can be defeated with either the upgraded suit's gun or the hades block, high defense.
Fighter TF57: Has an automatic turret shoulder mounted, nothing to special.
MagmaSkull: Easily shot down
MagmaGlop: Impervious to all damage
SpiritJell: Weak Enemy, easily shot down
Teshnetix: Has a shield, find a way to break it and he'll be defenseless