***UPDATED 30/8/18***
IF YOU ARE ON A PS4 AND STILL UNABLE TO DO THIS CHALLENGE, TRY USE A NEW CONTROLLER. OLDER CONTROLLER R2 BUTTON DON'T WORK VERY WELL WITH JUST CAUSE 3.
I have not been able to complete the Laguna Blast challenge because of the bug at the end of the challenge, and no videos have helped, so here is an easy way to complete it that I have just found out the day I put up this video.
Hope it helps the people still unable to get past the glitch :)
![](https://s2.save4k.ru/pic/bhUt-Oe4bf8/maxresdefault.jpg)