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Maybe you should google how to think for yourself, mother fucker
*I'm not talking about MMOs by the way, y'all don't wanna see my fully unhinged, 
- tier rant about that fundamentally misguided genre of WoW-clones
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I'm going through a terrible time and am feeling compelled to share my aggressive thoughts 
Meta-gaming is a fucking blight, death to America
Yep it was Deus Ex HR, but in fairness to the devs they did eventually patch in stealth and hacking options for the bosses.
Damn I should try to finish that game then, I had the same experience and got stuck maybe 2/3 of the way through the game, and haven't played it since. That was 9 years ago. Really enjoyed what I did play of it too
Disclaimer: I haven't played it since the update so I can't vouch for the quality of the update. Might want to do some research first.