This emulator is designed specifically for PlayStation Portable (PSP) games. Because Ascension was a high-end PS3 title, it cannot run natively on a PSP emulator.
You will need a flagship device with at least a Snapdragon 8 Gen 1 processor or better and 8GB+ RAM .
The best way to play God of War on Android is by downloading the official PSP entries. These run perfectly on the PPSSPP emulator :