With Intel HD graphics and no video card you would barely be able to run the game with good performance.
I'd suggest you be more specific about the CPU you have and other specs of the system.
Your graphics performance will be the issue.
The best Intel HD graphics, HD4000 is roughly on par with the minimum specs.
Chances are the game will run, but with very low settings. It won't look very good.
Although your Pentium's HD Graphics may be technically capable to play the game at the lowest resolution and quality settings, it will not be an enjoyable experience.
If you have a desktop system, I would highly recommend adding a dedicated graphics card before playing Far Cry 3.