This game is so boring. The hit detection is terrible. The missions are bland. Side missions don't show up, but you'll fail them when you leave. Side missions should be optional. What is this mission that turns into cheap psychological horror. Your family talking in your mind, doors appearing and disappearing. All the glitches with the hallways. This is where I quit. I wanted more action. And could've found it playing Sherlock Holmes rather than this. They did so much better with Terminator.

Cool. Can I have your stuff?

"Side missions don't show up, but you'll fail them when you leave."

You can either look up a guide, or put points into deduction, which will show you where the side missions are.

"Side missions should be optional."

They are optional.

"I wanted more action."

The game isn't hurting for action. It just breaks up the segments so it doesn't get monotonous. They also need to squeeze some story in there.

Part man,
Part machine,
All cop.
RoboCop
The future of law enforcement.

source: the theatrical poster.

Rouge city? Is RoboCop doing drag now?

Haven't played thr Game yet, are there multiple Robocops?
Are you playing in a Team with the other?

No, you play as the one and only Robocop, an experiment, really. Your colleagues are all human police officers so the dynamic between them is interesting.

There is only one Robocop, but if you get the DLCs, then you can change his look with a couple of extra costumes.

On some missions you are alone, and on other missions, you have a backup NPC fighting with you, like your woman officer partner.

As for the criticisms from the OP, I agree with some of them, and disagree with others.

Yes the missions can be bland, but not for any of the reasons that the OP mentions.

They are bland because they are missing the authentic Basil Poledouris music that they should have. The devs very clearly cut corners in this regard for the sake of being cheap.

Basil wrote some of the best music of all-time for this film, but yet all we get are a few bars of cheap imitations of his music in this game, and most of the time, not even that...either no music at all, or generic elevator music that is instantly forgettable and that has no relation to Basil's masterpiece music whatsoever.

The absence of authentic Basil music instantly & massively drags down the potential of this game. With that music, this game could have been an epic masterpiece.

But without that music, it can only be middling at best, and never epic, and never a masterpiece.

As for OP's points about side missions:

You can see them on the map if you put enough points into the Deduction skill, which you should be maxing out first anyways for the bonus XP it gives you.

But probably they should have put side missions on the map by default for everyone, so that no one misses out on them. So I agree, to some extent, with the OP's criticism about that.

As for the side missions having more story than action: I disagree with the OP's criticism there. I think that's a good thing. The original RoboCop film was never supposed to be just mindless action.

Rather, it has some depth to it, and some philosophical concepts that require thought & reflection (like what it means to be human, and is Murphy/RoboCop really a robot, or still a human after all?).

By this game giving some depth to its missions, and humanity to the RoboCop/Murphy character, then it is being true to the RoboCop license.

Likewise with what the OP calls "psychological horror" in this game. That is also being true to the original film, and therefore to the RoboCop license. So I don't think we can really fault the devs for that. That's a good thing that they did that, not a bad thing, IMO.

As for hit detection, I'm not expert enough in FPS to know about that, so I don't know if that's true or not.