Here is the full list of all 34 Nimbatus - there are The Space Drone Constructor achievements.
Complete the survival mode with the Pilot captain
Complete the survival mode with the Engineer captain
Complete the survival mode with the Heavyweight captain
Complete the survival mode with the Researcher captain
Reach Galaxy #10 in any mode
Freeze a bee and drop it off at the Nimbatus container
Construct a drone with over 500 parts
Have over 100 logic parts in a drone
Construct a drone with over 250 parts
Kill the snake boss in the ancient jungle ruin
Reach a velocity of 450m/s with your drone
Complete a mission without using thrusters
Construct a drone with over 100 parts
Destroy a Corp laboratory without disabling it's shield
Complete all tutorials
Print a factory part with a factory part
Complete the survival mode on normal difficulty or higher
Complete the survival mode with the Miner captain
Reach an angular velocity of 2000°/s with your drone
Drop 5 Bio barrels at the same time into the Nimbatus container
Initiate the self destruction sequence of your drone core
Own over 5000 Tritium in any mode
Find a planet filled with resources
Kill 10 bees by ramming into them
Own over 1000 Unobtainium in any mode
Completely destroy a planet
Upload a drone to the Steam Workshop
Lose your first drone in the survival mode
Construct your first drone
Win 10 matches in a row in the sumo tournament
Win 10 matches in a row in the brawl tournament
Win a versus race tournament
Win a catch tournament
Complete the survival mode with the Programmer captain