Funny concept, too poorly optimized to be good.
+ The concept.
+ The look of the characters.
+ The smooth frame by frame animations of enemies.
+ The music choice.
- The so called "easy" mode, which isn't easy, just "less hard".
- The glitchiness of the spider tank level:
__- An explosion orb went full screen size, I couldn't see anything but I could go to the next level by pressing A, so apparently I destroyed the tank. Which I encountered again shooting at me next to Hitler's plane...
__- The screen went fully yellow once and the game became unplayable; all I saw was sparks and bullets, but there was no way telling if I was dodging them or not (since I also couldn't see the lives menu).
__- I once kept respawning in a place in the bottom left corner, where I kept dying over and over again before I could even move.
- Intro can't be skipped.
For me, unfortunately, the cons outweigh the pros to the point where playing the game just isn't any fun.