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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.

81
Corrupted Odin

Kill Corrupted Odin on normal difficulty

Very rare
4.30%last reported global rate
82
Ancient Slayer

Kill 12500 Ancient Monsters

Very rare
4.40%last reported global rate
83
Karp King

Kill Karp King on nightmare difficulty

Very rare
4.90%last reported global rate
84
Jörmungandr

No public description is available.

Rare
5.00%last reported global rate
85
Satan

Kill Satan on nightmare difficulty

Rare
5.00%last reported global rate
86
Satanic Items

Obtain 200 Satanic Items

Rare
5.00%last reported global rate
87
Damien

Kill Damien on nightmare difficulty

Rare
5.10%last reported global rate
88
Fallen Inoya

Slay Damien in Fallen Inoya

Rare
5.10%last reported global rate
89
Mevius

Kill Mevius on nightmare difficulty

Rare
5.10%last reported global rate
90
Anubis

Kill Anubis on nightmare difficulty

Rare
5.20%last reported global rate
91
Grim Reaper

Kill Grim Reaper on nightmare difficulty

Rare
5.30%last reported global rate
92
Gurag

Kill Gurag on nightmare difficulty

Rare
5.50%last reported global rate
93
Valkyrie

No public description is available.

Rare
5.50%last reported global rate
94
Chaos Tower

Clear a Chaos Tower

Rare
6.00%last reported global rate
95
Satan

Kill Satan on normal difficulty

Rare
6.90%last reported global rate
96
Karp King

Kill Karp King on normal difficulty

Rare
7.00%last reported global rate
97
Mevius

Kill Mevius on normal difficulty

Rare
7.00%last reported global rate
98
Damien

Kill Damien on normal difficulty

Rare
7.60%last reported global rate
99
Anubis

Kill Anubis on normal difficulty

Rare
8.10%last reported global rate
100
Satanic Items

Obtain 50 Satanic Items

Rare
8.10%last reported global rate