Originally Posted by GregB
How us the difficulty? The original arcade version was known for brutal difficulty. I'm not very good at games like this so would be less interested if I'm not likely to get past the first few levels. I'm not asking for a walk in the park, but...
Very difficult. Same difficulty as the arcade game as far as I can tell in terms of enemies and bullets.
However, there's two saving graces. One, the touchscreen controls allow you to move much faster than you ever could with a joystick, which makes the game easier. Two, the default mode is with unlimited lives, so you can basically just die as much as you want. Each level will have a halfway check point so if you die you'll start from there. Eventually, even if you're not very good at this game (which I am not) you should be able to brute force your way through the whole game using unlimited lives. And the coolest part is that once you beat a level it's unlocked permanently so you don't have to play through the whole game from the beginning again just to get to a certain level.
Anyway, highly recommended. It's an excellent port and on sale for a buck.