Conditions:
Tips:
Special Agents require Monkey Cash, and it's quite to come by, even if you're playing regularly. Besides, unless you have already maxed out your Specialty Buildings, the Monkey Cash you have at hand will be better spent on them first since you're basically buying their permanent upgrade. I suggest tackling this mission if you have Monkey Cash you can comfortably spend.
More strategies about this special mission can be found in the Bloons TD page
.