Robotic Warfare – With the Engi Cruiser, have 3 drones functioning at the same time.

Probably the easiest achievement of the game to obtain. Obtain three drones and activate all three of them to unlock this achievement. Repair drone and anti-drone drone work best since they only need one power.

I hardly lifted a finger – With the Engi Cruiser, destroy an enemy ship using only drones.

This achievement can be done pretty quickly with the Torus in sector one if you encounter AI ship with no shield. Just let the “Anti-Ship Drone I” loose and he will get the job done for you.

If you’re not lucky enough to get a AI ship in the first few sectors, you can complete this achievement against a 1 shield ship in a asteroid field.

According to the wiki, you can use a boarding ship on a AI ship with doors connecting to every room. Since the ship will lose 1 hull each time a system is destroy, wait destroyed systems become activated again so you boarding drone take care of them. This might take awhile but will give you this achievement too.

The guns… They’ve stopped – Have 4 enemy systems or subsystems ionized at the same time while using the Engi Cruiser.

This achievement can be easily complete when visiting a pulsar since system ionized by the pulsar count toward that achievement. Systems that have cool down periods such as cloaking, hacking, mind control and teleporters also count towards this achievement. So ionizing the missing system while these are recharging will get you this achievement.

If you are going to to it the hard way, which is only going with weapon, the Ion Blast II cannons with a  Ion Bomb or/and a Ion Blast I will get the job done to. You have to quickly switch between system while the shield are down, and you will get that achievement.