start by tapping O to start him leaning forward. When he's got a bit of forward momentum, hold P and Q together to make him take his first step. When his front foot is coming down, change to pressing O and W together to make him take his second step. Keep repeating, but try to time it so he stays leaning slightly forward.
I get it now: Gold Scarabs are from your score, it does not give you coins. Like for the first level, gaining 500 coins gets you the scarab. This also means combos are very important in gaining score for the gold scarab.
Perhaps for people who don't use credits as much for anything, maybe you can add an instant-collect where you pay a certain amount of credits to instantly be able to collect from a facility. Of course, you pay more depending on the facility and it's level, and maybe a higher price for those credit junkies out there who has a ton of credits.
I really dislike the quest rewards. Nate's quest are rewarding though. Maybe you can multiply the rewards by 0.5 or 0.2 every level? Click + if you agree.