Infected:Reborn New Introduction

I noticed many new players struggle with how to play, it's a frustrating feeling joining a game but don't know what they are doing. So I come up with better instructions for them to figure it out easier.

Thanks to IcarusSoftPaw for helping with taking photos and testing the new knockback effect. Though the knockback effect has some weird interaction when players are in mid-air. I will do more tests on this feature and hopefully get all this content uploaded before this Friday.