The chase in the canal/river was a bit weak visually other than that no real complaints. Acting was good, story was good, good character development actually cared about what happened/ was going to happen to the lead actor of the film.
The mission was not only to go in the kill the scientist, it was to eliminate the people who had done the mission to kill the scientist to hide the whole operation with the scientist, so that it had zero loose ends.
The guys who came after Pine to eliminate him and his team were one level removed from the scientist mission, so once Pine's team was gone, there were no living leads back to the scientist, except Kiefer's character who originated it.
Exactly. So Foster was cool but not Pine? I don't get it either. Maybe Kiefer didn't plan on killing everyone, it just ended up happening as a result of the Berlin debacle with the police.