I thought of zombies... they would go to you, 1/2 slower than normal. They would be activated through a red block. They chase the person who punched the block. If they get you you get ported to entrance of Testing area and the other zombies would dissapear. Of course the zombies can't exit the testing area.
So, you could practise with pistols for example.
So, you could practise with pistols for example.