It seems this game is a copy (yet free so I'll play) of space hulk, nostalgia indeed but I dislike the fact the game tries to guide you no matter what.
I wish we could be a generic character with undefined features like in the other games, Along with having color options (I hate red and orange used in excess)
The upgrades are too seperated in the beginning and too overpowered, Also it requires a sense of accomplishment for each wave. Like the machines exploding into flames and shrapnel (I don't care about the metal thing we just like stuff that explodes)