Can someone teach me how to hide below the ground and shoot up?

I like how quickly you assumed it was hacks and reported him. Most likely a bug/exploit.

Thats likely why its in the tech support forum...

Anyway, someone who blatently abuses a bug/exploit still deserves to be reported.

Judging by what the guy says in chat I would think he is knowingly hacking. Also, report spam is not nice.

Yeah that was definitely a blatant exploiter. He deserves the reporting.

Spamming /report wont get it noticed any faster they may even suspend you for spamming their system like a noob. While he is clearly exploiting a bug or using a hack you still should not spam report.