Here is the full list of all 54 Seasteader achievements.
Have every type of production building in one level
Have every type of manufacturing building in one level
Have every type of entertainment building in one level
Have every type of housing building in one level
Have 24 builders in one level
Complete the 15-mission campaign
Reach population of more than 250 people with zero unemployment
Reach population of more than 250 people with zero homelessness
Have 1 investor building on your seastead
Have 5 investor buildings on your seastead
Attract 100 immigrants to all your seasteads
Attract 1000 immigrants to all your seasteads
Attract 10 000 immigrants to all your seasteads
Attract 100 000 immigrants to all your seasteads
Build 100 buildings amongst all your seasteads
Build 1000 buildings amongst all your seasteads
Build 10 000 buildings amongst all your seasteads
Build 100 000 buildings amongst all your seasteads
Reach $100 000 in one level
Reach $1 million in one level
Reach $10 million in one level
Reach $100 million in one level
Upgrade your hub to level 2
Upgrade your hub to level 3
Upgrade your hub to level 4
Upgrade your hub to level 5
Import a total of 100 000 goods amongst all your seasteads
Import a total of 1 million goods amongst all your seasteads
Import a total of 10 million goods amongst all your seasteads
Export a total of 1 million goods amongst all your seasteads
Export a total of 10 million goods amongst all your seasteads
Export a total of 100 million goods amongst all your seasteads
Have a population of 100 seasteaders
Have a population of 250 seasteaders
Have a population of 500 seasteaders
Have each happiness metric above 60
Have each happiness metric above 70
Export 200 000 fish in one level
Export 100 000 beer in one level
Export 100 000 bourbon in one level
Export 200 000 corn in one level
Export 200 000 cotton in one level
Export 200 000 fruit in one level
Export 100 000 gasoline in one level
Export 100 000 glass in one level
Export 200 000 sugar in one level
Export 200 000 hops in one level
Export 100 000 microchips in one level
Export 100 000 oil in one level
Export 100 000 oysters in one level
Export 100 000 plastic in one level
Export 100 000 polymers in one level
Export 200 000 sand in one level
Export 100 000 textiles in one level