Well, you got me to replay this map on Normal, and after a few restarts I managed to complete it.
Basically, my strategy to this map is to relocate in the center of the map, where there are 2 common ore beacons a single central base can use. I won't even bother unless those two are at least both 2-bars (this run, I had a 3-bar and a 2-bar).
Advantage: you can keep the fighting in areas that do not get hit by quakes, only 3 decently manageable fronts to worry about.
I only extended my starting base by 2 residences, 1 agridome, one lab, the nursery and university. After those were build, focus was turned on building the new main base (CC and SF). Ever since the map started, I've been bulldozing my truck route. Whilst the new CC and SF are off to get built, I prepared a smelter and a tokamak back at my starting base. Once I got to idle my starting SF, having just enough workers, I activate my second base's CC and SF, starting a VF. Grabbed my trucks and moved them to my main base while the miner was being built, whilst also building a second smelter.
After this part, focus turns on building the A lab, second tokamak and residences, agridomes, new nursery and university, so I can finally idle the starting CC.
Lone lasers start passing by as this happens, hitting my tokamaks on their way. Along with the third lone laser, the CC attacking trio comes in. 2 Microwave lynxes ready at this point along with 4 ConVecs in the base, 2 of them ready to repair the CC. The trio goes down with minimal threat to my CC. quickly researched the stickyfoam and got a few at key points. Not building an army now, since attacking waves are dependent on the size of your army. Only rushing a few mics when the attacks come in.
Only now do I turn to rare ore, building a SF and CC to take to the bottom-most rare ore beacon. Luckily, it as a 2-bar. I also build a couple of rare ore smelters to start the mining. Linking the two bases with tubes along the projected lava spread edges (miscalculated a small section that got moved later). ESG and EMP Panthers are being built once rare ore flows in, moving a small team of ~20 panthers to my rare ore site. Building another few for main base defense.
After a few more waves, the second volcano erupts, forming a beautiful wall to the left of my main base and making main base defense take place on just 2 fronts (the right and the bottom). By this time, I start making ESG+EMP tigers. 2 VFs in my rare base and 4 in my main base. Eventually manage to form 3 full groups of said Tigers. 2 groups guard the 2 main base fronts, reinforcing each other when needed, and one group now guards the small entrance to the north of my rare ore base.
Walls are a major factor in this strategy. Any entrance you know will be used by the enemy needs to be restricted to a line 2 squares wide, other entrances sealed shut with lots of walls.
Of course, I extend my residence space, food production, build medical centers and 2 spaceports in the meantime, also expanding to the second common ore beacon (the 2-bar).
After all this, it basically gos on the same way, me researching starship components and launching them with one spaceport. the other spaceport keeps an EMP missile ready (I actually never used it, though I probably should have) and defending the three entrances.
Being foolish and not building 2 rare storages in the main base led me to a loss of both my rare smelters by a vortex. Such a smart vortex it was, that it took my SF there too! After a hard battle with the next attacking wave, I manage to get my rare ore back and am now suffering from major losses in army, also having to finish the star ship and launch a 10k rare. Marginally surviving another two major attacks, I finally launch the evac and am done with it, at around mark 2700.
I made end-game screen shots, if you're interested.
And there you have it, my bad strategies getting me past this map on Normal difficulty
