go into the fortress and get them
There are no RuneScape cheats. You can buy black armour on the Grand Exchange, or (in parts) in different specialized armour shops.
You buy it. In fact, I believe this is the only way; you can't make black armour.
My guess is that he did what superman does and go around earth REALLY fast
You don't get it fast. You can get a million in a few days, or if you are very good at RuneScape, perhaps in a few hours.
I prefer the famas. It shots fast and is accurate. Easy kills.
There is no way to get money that fast in RuneScape.
You don't make money that fast in RuneScape.
Because he is fast
Depends What skill you are training.
by killing monsters
You can't get money that fast.