TERRARIUM - Anthophobia Dev blog

You can "make" that monsters purposely by shooting torso guy and make him run into bottom guy. try it XD

Also regarding the gold card : those are all gold cards from Chapter 5, You can find all of them from all around Chapter 5 area.
Here's major hint :
1. Gold cards are always near the deadbody(of agent)
2. Try find something weird object and try shoot, hit it