The first half of the game is fun, however the latter half (mission 4 and onward) suffers from a lot of flaws, even compared to the flaws that most of the post-bankruptcy Metal Slug games (4-XX) suffer from.
The main problem is the difficulty. Like any MS game, it's difficult, but in a bullshit way. Some enemies appear off-screen or come out of no where, and some areas flood the screen, making it impossible to fight back without dying once. Metal Slug 3 was incredibly hard too, but that game does everything that makes a hard game fun, unlike this one. At least it's not MS7 where you have limited continues.
Overall, it's fine. In the Metal Slug game ranking I'd put MS7/XX above MS4 and 2, but below the rest of the main games, a solid 7/10.
The main problem is the difficulty. Like any MS game, it's difficult, but in a bullshit way. Some enemies appear off-screen or come out of no where, and some areas flood the screen, making it impossible to fight back without dying once. Metal Slug 3 was incredibly hard too, but that game does everything that makes a hard game fun, unlike this one. At least it's not MS7 where you have limited continues.
Overall, it's fine. In the Metal Slug game ranking I'd put MS7/XX above MS4 and 2, but below the rest of the main games, a solid 7/10.