If there's such a thing as a video game dictionary, you'd find a picture of Meltdown listed under "repetitive design". The mechanics are solid, the graphics decent, and the music almost catchy, but it never changes even a slight bit from the very first level in the game. It's almost as if the developers created a single level and felt that was enough to sustain the entire game, repeating it to incessant amounts to pad the experience which might as well begin and end in the few minutes it takes you to complete the tutorial.
Meltdown is an isometric shooter that favors simplicity for complex mechanics or enemies. Enemy AI is mostly nonexistent, weapons are self explanatory, and the leveling system generous enough that you'll never need to choose between upgrades as you have more than enough points to level them all with more to spare. And if I'm being completely honest, the basic design is actually enjoyable to an extent (at least in coop), but its design is so stagnant, so painfully repetitive that it was literally on the verge of putting me to sleep as I struggled to retain interest while playing through what felt like the exact same level I'd played a dozen times before. Enemies, encounter designs, environments and level layouts; they're all exactly the same from each level to level, leaving on to wonder what exactly the point of continuing is.
Rending progression even more useless, is how you are restricted from so much until you prestige your character (which first requires you level up every skill tree), which then completely erases all progress you've made (including unlocked missions) and expects you to play it all again with nothing more to show for it but a new color on your username. It's incredibly poor design decisions like this that make Meltdown feel as if the developers didn't bother to think how the player would take this forced repetition past that which you experience by default going through the game, as if they expected them not only to endure the grind but actually enjoy it.
To be entirely fair, there are actually a few interesting ideas presented with Meltdown (such as the automatic cover system), but they are so entirely useless that there really is no need for them to be in the game at all. So many elements seem out of place or pointless, making an even bigger case for the game being less than finished or thought out.
Meltdown at its core is a solid, if largely unremarkable, coop focused isometric shooter, but the amount of content it contains wouldn't fill the average demo. It's one of the worst offenders at artificially padding a game's length by reusing the same content I've ever seen, and isn't worth bothering with for anymore than a mindless time waster. Even as that it fails to entertain, with the most enjoyment to be found in the numerous moments the game decides to break and glitch you and enemies onto objects.
Who knew getting stuck on a wall could be so much fun.