Your one of the only people left alive, but you don't care! you have a brain, and you can use your brain to make multiblocks and automate all of the things!
Use Whatever you can to increase your industrial output, but watch out for things lurking in the dark...
Use your mod-playing expertise to automate everything and anything. Wanna automate nuclear reactors? go for it.
Use water-Strainers to assist with resource gain, and Mahou Tsukai may help deal with your pesky enemy players...
Inspired by Jeildscraft