Unfortunatly it does Not give you the achievement for completing all the Missions on cuatro colinas. I know this impacts everyone and has been a known issue for a while now so please fix it!
#Cuatro Colinas Arc Achievement
quartz gust
young bone
Hey @quartz gust ! That's not the experience we want for our players. We'd love to dive into this deeper. If would be great if you could drop us a message using this link: https://support.thehunter.com/hc/en-us/requests/new We're waiting for you there!
winged berry
Same for me - literally just did the last mission and have not received the All Missions achievement. Also sending a message with the above but there is a lot of info online about this being glitched. Thanks for any help!
errant lintel
same issue for me on PC.