Help Me To Run God Of War 3

You didn't read the stickied thread in General Discussion. It mentions piracy isn't allowed, and you said that you downloaded the game though illegal means.
It is also mentioned that the emulator only has a few games classified as "Playable", so you won't be able to play almost anything on it correctly as intended. (It also mentions AAA games don't run yet)
Also note that your hardware specs are considered being in the Low Tier, so you won't be able to get much performance out of RPCS3 yet as it is still in early development and therefore lacking a lot of functions and optimizations.