once go said large/highIt's straightforward enough, limited space but ample crystal energy.
Fresh startOnly workable strat I've foundGrabbing the red crystal underneath me gets me some quick energy, at the cost of a couple of shields, but it leaves me behind some decaying terrain. This is actually a positive, as I need immediate access to the emitter (just not at the moment). The white crystal on the right is ripe for the picking, and it's trivial to set a shield in place to stop the creeper.
On my first attempt I thought this would be an absolute cakewalk, all the energy I need to build whatever, and only one exposed emitter, then I looked at the strength, 65 mils on that thing. Oh well, better start building. Here come the drones, oh noes!

Alright, try two, k, we'll build some blasters after we secure that white gem and set them to drones only, works great. Now we'll build some conversion bombs for that titan. I can only build three on my (now limited) energy supply. (By the way, if you try to build four, the ground will decay underneath you and the drones will head for the new shortest path to you, rendering your bombs and shields useless.)
How it ends upI cannot get a quick enough nullify on this thing. As soon as the ground breaks, I send two in and convert a path straight to it, I grab the green gem on the way and plant a nullifier as soon as possible. There's no energy starvation, and I'll even convert the titan again once it starts pushing back towards my nullifier. The thing just puts out too much creeper.
So maybe I'm managing wrong, or something, show me up.