Alright. It seems that no-one knows this but the clock on the other side of the pack-a-punch machine is where you get the Fly Trap achievement/trophy.
What you need to do is get the Wunderwaffle DG2 and then upgrade it in the pack-a-punch machine. After you've done that, shoot the clock with your new upgraded Wunderwaffle DG2. It will give you the achievement/trophy and activate the trap.
Also, if this doesn't work for you, then try this method. But it is harder to find all the teddybears and monkeys and WILL take you longer.
[ame="
https://www.youtube.com/watch?v=H-ARBTZV5_g"]YouTube - WTG Telixion Theory : Der Riese Video 3 : Elevate Your Senses Tutorial[/ame]
I'm new to NextGenUpdate so if you found this helpful please give me good rep!
Thankyou!