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Hero Siege Achievements

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

Total achievements135
Rarest rate0.000%
Ultra rare49
Last checkedSep 22, 2026
Delayed official data

Rates and award counts were last observed on Sep 22, 2026.

61
Cthulhu

Slay Cthulhu on hell difficulty

Very rare
1.60%last reported global rate
62
Soulforged Ring

No public description is available.

Very rare
1.60%last reported global rate
63
Fall of Karp King

Slay Karp King on inferno difficulty

Very rare
1.80%last reported global rate
64
Fall of Mevius

Slay Mevius on inferno difficulty

Very rare
1.80%last reported global rate
65
Fall of Satan

Slay Satan on inferno difficulty

Very rare
1.80%last reported global rate
66
Peasant of Hardcore

Complete normal difficulty on Hardcore

Very rare
1.80%last reported global rate
67
Fall of Anubis

Slay Anubis on Inferno difficulty

Very rare
1.90%last reported global rate
68
Fall of Damien

Slay Damien on inferno difficulty

Very rare
1.90%last reported global rate
69
Trick or Treat!

Complete the Halloween quest chain

Very rare
1.90%last reported global rate
70
Fall of Grim Reaper

Slay Grim Reaper on Inferno difficulty

Very rare
2.00%last reported global rate
71
Eternal Battle Fields

Slay Sung Lee in the Eternal Battle Fields

Very rare
2.10%last reported global rate
72
Fall of Gurag

Slay Gurag on Inferno difficulty

Very rare
2.10%last reported global rate
73
Merry Christmas

Complete the Christmas quest chain

Very rare
2.20%last reported global rate
74
Cthulhu

Slay Cthulhu on nightmare difficulty

Very rare
2.30%last reported global rate
75
Cthulhu

Slay Cthulhu on normal difficulty

Very rare
2.40%last reported global rate
76
Shadow Realm

No public description is available.

Very rare
3.00%last reported global rate
77
Angelic Realm

Enter the Angelic Realm

Very rare
3.10%last reported global rate
78
Angelic item

No public description is available.

Very rare
3.40%last reported global rate
79
Corrupted Odin

No public description is available.

Very rare
3.40%last reported global rate
80
Ancient Slayer

Kill 20000 Ancient Monsters

Very rare
3.80%last reported global rate