How to make the correct behavior of the enemy?

Hello! Please tell me, how can I do to beat red sprites on goal at a time, but in a random order? Let's say a player first effort on goal in blue sprite then any red sprite. And how to make that red sprite when hit the gate crashing behaved like a blue sprite. (Bounced)? I did as a bullet, but it does not work. To better understand my problem was, I created a test scene. Thanks for the help. Sorry for the bad english.

Problem with a random shot of red sprites, I decided, I'll hope that more experienced users will be able to help me with the problem of rebound red sprite when plunging into the board or the opponent. thank you.

Hello! It seems I solved a problem with a rebound, there was still a question:

If to press and hold a blue counter, it is possible to scatter gray, what is wrong, whether it is possible to make somehow so that when I delay a blue counter more could move than nothing?