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Sins of a Solar Empire II Achievements

Official Steam achievement definitions and latest reported global unlock rates, ordered from rarest to most common.

Total achievements72
Rarest rate0.200%
Ultra rare7
Last checkedSep 16, 2026
Delayed official data

Rates and award counts were last observed on Sep 16, 2026.

41
A Doomed Dynasty

Kill off the Aluxian Resurgence on a single map.

Rare
14.4%last reported global rate
42
Best Offense…

Win as the TEC Primacy.

Rare
14.8%last reported global rate
43
Pirate Hunter

Kill off the pirates in a match.

Rare
15.3%last reported global rate
44
Commander

Play for 50 hours.

Rare
15.6%last reported global rate
45
Adept Administrator

20+ planets with maxed out planet tracks (after all research upgrades).

Rare
16.1%last reported global rate
46
Best Defense…

Win as the TEC Enclave.

Rare
16.6%last reported global rate
47
Friend of the Aluxi

Max out reputation level with the Aluxian Resurgence.

Rare
18.1%last reported global rate
48
Diplomat

Win a game with an ally.

Rare
18.9%last reported global rate
49
Exotic Salesman

Sell an exotic resource.

Rare
18.9%last reported global rate
50
All-Knowing

Complete all research subjects in a single game.

Rare
19.0%last reported global rate
51
Starbase Recycler

Destroy at least 10 enemy starbases in a single game.

Rare
19.8%last reported global rate
52
We Are Here To Stay

Max out reputation level with the Viturak Cabal.

Uncommon
20.5%last reported global rate
53
Elite Status

Have a level 10 capital ship or titan.

Uncommon
22.0%last reported global rate
54
Lieutenant

Play for 30 hours.

Uncommon
22.1%last reported global rate
55
Talk Like A Pirate

Max out reputation level with the Pirates.

Uncommon
22.4%last reported global rate
56
Letter of Marque

Kill 100 pirate ships.

Uncommon
23.0%last reported global rate
57
Ally of the Jiskun

Max out reputation level with the Jiskun Force.

Uncommon
23.5%last reported global rate
58
Our Survival Is Assured

Max out reputation level with the Pranast United.

Uncommon
24.7%last reported global rate
59
Influential

Spend 10 Influence points in a single action.

Uncommon
25.3%last reported global rate
60
Starbase Builder

Have at least 10 starbases in a single game.

Uncommon
26.5%last reported global rate