You fight in an helicopter, you go to a mysterious island, you go up a montain, and even climb a gigantic machine! There is a lot to see in this version, and it's pretty unpredicable and cool. To begin, there are way more levels(9 missions in total!), and they're way more creative than the arcade version too, and along with the new cutscenes this game has, it makes the story actually pretty interesting.
#Double dragon 2 nes difficulty full
The NES version plays more slowly, it's a way slower paced game overall, but it's full of new content. Really memorable melodies with great composition and rich sound.
And, even though I think it doesn't look as polished as it's prequel, the graphics all have an ugly palette imo and the new enemies look more to be spazzing out when they're trying to attack you than anything, it still looks really good, and the music is better than ever. On Arcade, the game feels fas, fluid and well paced, but very short, and the difficulty is appropriate, getting harder as the game goes but still giving you a challenge on every level, with more and more enemies. I like the Arcade version better, it's more pick-up-and-play, but the NES version is also really fun, if you're willing to be more invested.
It's honestly really difficult to compare these games, because they're really different from one another.