The trailer was incredibly promising, compelling all of us to watch the movie at least once. I was expecting a "Lost in Space"-type adventure, where Mickey repeatedly dies for a meaningful cause and comes back to life to fulfill his purpose. However, the story didn't quite take that route. For those who usually claims a plot to be very much predictable, this movie is not like those.
The first part of the film was quite good, filled with dark comedy. We witness Mickey's suffering, understand why he chose his job, and see how indifferent everyone is to his recurring deaths. This tone persists through about two-thirds of the movie.
The expedition leaders were the most disappointing characters. They should have been more responsible and sensible, but the story chose to depict them as foolish jesters. The ending and climax was not very satisfying and was quite unpredictable, with numerous plot points, such as communication with the planet's inhabitants, that felt chaotic.
As for the acting, Robert Pattinson delivered an excellent performance, showcasing distinct personality shifts between his versions of Mickey. The other actors also did a commendable job, but the story itself was the primary letdown.
Spoilers:
I am left with two major questions after watching the movie:
First - How did the leader of the planet's inhabitants know Mickey's name?
Second - How was Mickey confident that detonating himself wouldn't also destroy the other Mickey?