not rubbish, think of it more like a remake of Doom 3.............because they couldn't relocate the game to Earth, without loosing it's atmosphere/Claustrophobia/ Darkness/sense of terror, this considered, the best location is definitely another Mars base..or a giant 10 mile long Space cruiser.
what they've got wrong is too many Dumb ass AI in the same location, this is very hard to get right in a linear shooter, it just ends up BORING you to sleep
they tried something new last year............scrapped it because it wasn't DOOM .......and then returned to this.
the next thing they've got totally and utterly wrong is :- glowing health and ammo dropped on the floor, ammo should be found in boxes/ lockers etc........this kills the atmosphere completely