I don't see the purpose
Instead of making 6 games, why not make a single extremely good one? The voice acting is weak and generic, the music dull, the gameplay uninspiring and the controls are ridiculous; anyone who knows PC games uses left ctrl to fire. Z makes no sense as a default.
The art style is run-of-the-mill and there's no point in losing marks for that, but as a 3D artist I don't see the point of several games following the same theme. You overextend a mediocre script, and fail to work on the gameplay. It's just a series of cliched scenes and gametypes that I could play in other games on this very site at a much more polished level.
It feels like a semi-rushed mish-mash rather than a true expression of artistic ability. The issue is that it feels much worse than what it COULD be, and that's where it falls down. Clearly there's talent here, but I would never be satisfied with something of this standard. Even the introductory movie for example needs sharpening up, and the actors told to ditch the American sci-fi cliche accents. Arguments are more rapid than your portrayal, and the scene is unskippable. That's not just frustrating, it's also unfitting with the game itself, which is designed to be quick and brutal. Where's the scene setting?
Overall, the programming is fine and the art standard. It doesn't have to be beautiful to be functional. But that's the problem; it's merely functional. Why create six? I don't get it, and it seems like a real waste of time when you could have invested in making something not only original, but also stunningly good.
Uninspiring and I expected better.