In general, this is an excellent game, but some of the missions are annoying as hell.
Right now I'm stuck on the underwater supercomputer deal. I have to go FIND A REQUISITION FORM? Jesus. And I'm totally stuck. I've spent about a half hour running around this goddamn level looking for that form and all I can find is a few doors that require a keycard or decoder, but I have neither. I've killed all the guards and robots about fifty times over in the process. Whee!
A few missions prior to this, I had to find a bucket and put out fires while avoiding invulnerable enemies who packed a major wallop. What a pain.
Then, there was the defend the HQ mission. It took ANOTHER 30 minutes of aimlessly running around the level before I could manage to trigger the last few mimes to appear so I could complete the "stop the invasion" mission objective.
I was not terribly fond of the "remove all the wanted posters" mission either. You can't fight back, and you have to ghost the police to see where they slap up the posters.
I appreciate the concept of mixing up the gameplay a bit in different missions, but some of this is more tedious than fun. I feel like I'm being forced to jump through arbitrary hoops.