Here is the full list of all 20 Heroes of Steel RPG achievements.
Achieved Level 5 with all four heroes and recorded at an Inn or Way Station
Kill 3 enemies in a single turn as a group
Killed 5 enemies in a single turn as a group
Killed 8 enemies in a single turn as a group
Killed 10 enemies in a single turn as a group
Achieved Level 15 with all four heroes and recorded at an Inn or Way Station
Achieved Level 25 with all four heroes and recorded at an Inn or Way Station
Achieved Level 35 with all four heroes and recorded at an Inn or Way Station
Achieved Level 45 with all four heroes and recorded at an Inn or Way Station
Defeated the Ratkin Great Shaman
Dethroned the evil Baron Arhaive
Destroyed Vurnak the Smith and collapsed the Underforge
Rescued Valent Koda from the Orcin clutches
Cleansed the fallen River Village of Talia of the cult
Slain Vlotgar Braeys and assumed the burden of Braeys Family blood on your hands
Broken the Orcin siege of Gholla Outlook
Defeated the evil presence that rules the Tower in the center of the City of the Dead.
Saved Wyatt's brave daughter Miranna from the curse of Tevensa.
Slew Tevensa and claim the Heartbeat of Summer as your own.