Understanding the game engine (if publicly known) can help. Some engines have more modding support than others.

Skip the grind and unlock every attachment, weapon, and specialization immediately.

Unlike later entries in the series, this modded version is often optimized for full offline play on modern Android versions (up to Android 14). Unlocked Content:

Turn off your internet for the first launch to bypass initial license checks if using an offline mod. Pro-Tips for Modern Hardware