Did anyone else skip the third and fourth weapon? The third seems to have no range, but I never got further than level two on all of its upgrades. Though Lasers are beast.
For those who are leaving cities with low health. Take the armor off (or switch with a lower level one) and put it back on. Or add or remove a party member. That what I do and it seems to work ninty-five percent of the time
The AI is either stupid or overpowered. Satan conviently blocks most of your attacks then does a fireball/cerebrus combo. I got lucky once and got Satan's health to 50%, but died shortly after.