Sometimes going in alone isn't the best solution, a proper Rogue knows this. You can't always trust your friends to do the job right, or go see a doctor in the middle of no where, so how does one best prepare for this? By building their own friends out of just about anything they can get their hands on.
The tower is a great tank even at skill level 1 if used along with Medibots and Repair.
Technological Marvel gives a half skill slot for every engineer skill equipped so efficiently two engineer skills fit in one slot.
Overclock's explosion is also powerful. A good way to further damage enemies that are killing your turrets.
Metalaegis is a great way to deflect physical attacks from you to the machine as long as you stand next to it. And it attacks too!
An ally Engineer is a Mechanation's best friend! And the class alone is great for the race alone.