Best Ways to Upgrade Gun Mayhem 2 Skills

Hi everyone,

I’m trying to optimize my Gun Mayhem 2 Skills to succeed in missions and arena battles. Which skills should I prioritize and how do upgrades affect performance? Are there walkthroughs or strategies that demonstrate the most effective skill combinations?

I’m also curious about character-specific abilities and combat strategy. Insights on using skills in both missions and arenas, along with official guides or tutorials, would help improve performance and make gameplay much more enjoyable.

Thanks in advance.