no byable ending ?

OH YEAH finally i have finished this map and found the easter egg with the great Ray gun Mark II ! here is the vidéo : Great map hope you will do better than this !

i just found 2 scientist have i to turn the round to find the other ? I HAVE SEE on all of the map nothing..

is there buyable ending ?

Hello and welcome to my youtube channel for my last vidéo i have done Puns easter egg in 8 roounds you can show that here :
Dont forget to like share comment and subscribe thanks

Take look at my vidéo i have finish the map at 8 rounds https://www.youtube.com/watch?v=AQodJLRXAtQ&feature=youtu.be
 i liked too much this funny map ! thanks for your work.

where is the buyable ending ? i have found all 3 radios but no buyable ending ?