Beta Campaign Last Mission- What are the win conditions?

[Squid Stomper]

I'm on the last mission, after you defeat the collective, the Nexus launches a nuke at your main base at the Beta Site. You're told to evacuate your units as the collective start to pour into the map. I beat the previous mission using just a sensor truck and static ripple rockets/ howitzer and i recycled all my other combat units (I unlocked the new Tiger Body and i wanted to transfer my units exp to the new frame). So i load up my 10 units (left over Arty, Trucks etc) but nothing happens. the Collective rolls in destroys my base and I lose. Am I supposed to hold out for the whole thirty minutes or is there a specific amount of units that need to get shipped out?

[Eragon]

Your base have to survive until the end of the timer.
And you may need to load the dropship full each time ( not sur on the last one).
I crush the collectif with new unit and fortification and sand my veteran to the new map.

[Rozpierdalacz]

You have to survive till timer reaches 0. dropship will be coming back to pick up more units every 5 or 10 min. You will keep units you evacuate and loose the rest. Make sure to send at least 1-2 trucks with 1st transport.