ouch man, I believe there is a self help group for that. They meet on wednsday next to "My dogs were knifed" group :-)
The posts on this forum are far more likely to give me PTSD than the game itself.
In order to suffer from PTSD one must first endure the TS part (Traumatic Stress).
And while video games can be frustrating, the 'stress' one might experience playing is non-existent compared to the actual stress one experiences actually being shot at ... for real ... IRL.
If you've ever been terrified enough that your heart felt like it was gonna explode then imagine that multiplied by 10 to get a rough idea what combated related stress feels like.
I hope you aren't serious. I bet the wounded veterans that come back from the Helmand Province in Afghanistan would smack the **** out of you. PTSD from video games......pshhh...honestly man, think about it. Sounds ridiculous.