An efficient setup to get XP for the upcoming Engineer Monkey Paragon, and gets 50k XP every time you do it.
Quick note
(ノート: I did use the Vigilant Sentries knowledge, which makes sentry guns last longer. I don’t know if this affects anything, but it probably shouldn’t. Even if it does, it only costs 3 monkey knowledge points, which isn’t too hard to get.)
The setup
初めに, you need to do this on Cubism Deflation on Easy difficulty. If you haven’t unlocked this yet, I heavily recommend that you do since it’s amazing for farming XP.
At the beginning of the track, place four 0-3-0 engineer monkeys to the left of the track, and then on the right of the track, place three 4-2-0 (ニース) monkeys along with a 1-1-0 monkey to the right (I used the 1-1-0 monkey because deflation didn’t give me enough money for anything else)
If you did the setup right, このように見えるはずです:

Now what you should do
Now that you’ve set up the XP farm, wait until the end of round 60, (which shouldn’t take more than 6-7 分), and then restart the process multiple times. (Also do not go into free play mode after round 60 since it’s surprisingly less efficient)
This should be able to prepare you to get the engineer paragon once it comes out, and it should also be useful for unlocking certain upgrades if you haven’t unlocked them yet.
Make sure to leave a comment down below, and I hope this will be of use to you.