this is not suttle at all...
It's way too much combined and too on the nose AND we have already a cosmetic referencing robocop, we really don't need one for each class (yes, besides what the 10 people say out of 25000)...
Maybe make the armor has some chanses for usage but a more darker tean color and remove the robot hand and arm would benefit it. That might just make it better and usable overall or if it were gloves instead of a random robot hand on soldier.
The hat looks kinda good but it's also somehow very ugly and looks very out of place. It also wouldn't really match with anything, i can't see anyone use any of these cosmetics as they are right now. Only maybe a handful of people

normally very cynical of item sets that reference other media, they tend to look gaudy and stand out way to much. Not with this, your texture work, especially on the helmet, is insane and very tf2-ish. While some of the torso looks a little off (the front vent on his arm), this is otherwise fantastic. Really good stuff!

YES! YES!

A well done reference set, not too outlandish to look off yet still clear what it's inspired by

this better be halloween only

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