Here is the full list of all 86 Generals Rulers achievements.
Army strength: 1000000
Hire units: 10000
Hire scientists: 20000
Get the gold: 4000000
Hire scientists: 500
Hire scientists: 1000
Hire scientists: 2000
Hire scientists: 5000
Hire scientists: 10000
Army strength: 500000
Hire units: 5000
Army strength: 250000
Hire units: 2500
Hire units: 1000
Army strength: 100000
Study science: 5
Study science: 10
Get population: 100000
Get population: 200000
Get population: 500000
Get population: 1000000
Get population: 2000000
Get population: 5000000
Army strength: 1000
Army strength: 2500
Army strength: 5000
Army strength: 10000
Army strength: 25000
Army strength: 50000
Get the gold: 100000
Get the gold: 400000
Get the gold: 1000000
Victory in Europe
Victory in Asia
Hire units: 25000
Hire units: 50000
Hire units: 100000
Hire units: 250000
Hire units: 500000
Hire units: 1000000
Hire scientists: 50000
Hire scientists: 100000
Hire scientists: 200000
Hire scientists: 500000
Study science: 25
Study science: 50
Study science: 100
Study science: 250
Study science: 500
Study science: 1000
Study scienceStudy science: 1500
Study science: 1800
Get population: 10000000
Get population: 20000000
Get population: 50000000
Get population: 100000000
Army strength: 2500000
Army strength: 5000000
Army strength: 10000000
Army strength: 25000000
Get the gold: 10000000
Get the gold: 40000000
Get the gold: 100000000
Get the gold: 400000000
Grab the regions: 5
Grab the regions: 10
Grab the regions: 25
Grab the regions: 50
Grab the regions: 100
Grab the regions: 250
Grab the regions: 500
Destroy 100 units
Destroy 250 units
Destroy 500 units
Destroy 1000 units
Destroy 2500 units
Destroy 5000 units
Destroy 10000 units
Destroy 25000 units
Destroy 50000 units
Destroy 100000 units
Destroy 250000 units
Destroy 500000 units
Destroy 1000000 units
Destroy 2500000 units
Destroy 5000000 units