We have very different definitions of harsh in that case, expecting some depth to the characters and that the actors have believable lines to deliver is far from harsh in my opinion. I don't think that's an unfair accusation to level at any film let alone this one. We agree this is pretty average sci-fi fare but that would mean that you haven't raised this up to the level that many others have, why is that? Is it the same reason that I couldn't completely and utterly slate it? I haven't seen a film where Fassbender is anything other that mesmerising but when viewed on screen with the rest of the cast it's hard to measure up to someone with his acting chops, however each of the cast have been in some cracking films and television shows in the past so they all have it in them to deliver believable performances. The reason they don't is the script doesn't give them the freedom to do that, it's so full of grand speeches and sentiments about the meaning of life it ignores the minutiae of real life, the stuff that gives characters depth and grounds them in reality. Something that if you go back and watch Alien, you will find in abundance.