Tech Level 1
Soul Eater (I)
You gain more sacrifices from enemy units that die in battle.
Culling the Weak (I)
You gain more sacrifices from friendly units that die in battle.
Spell Acquisition: Weaken
Allows use of the spell "Weaken" in battle.
Tech Level 2
Altar of Sacrifice (I)
Improves the offence and defence of small-sized demonic units.
Spell Acquisition: Paralyse
Allows use of the spell "Paralyse" in battle.
Tech Level 3
Culling the Weak (II)
You gain even more sacrifices from friendly units that die in battle.
Black Magic Research (I)
Improves the effects of demonic magic in battle.
Tech Level 4
Soul Eater (II)
You gain even more sacrifices from enemy units that die in battle.
Spell Acquisition: Darkness
Allows use of the spell "Darkness" in battle.
Black Magic Research (II)
Further improves the effects of demonic magic in battle.
Troll Summoning
Enables production of trolls. Trolls are medium sized units.
Tech Level 5
Altar of Sacrifice (II)
Further improves the offence and defence of small-sized demonic units.
Giant Research (I)
Improves the offence and defence of medium-sized demonic units.
Ettin Summoning
Enables production of ettins. Ettins are medium sized units.
Tech Level 6
Culling the Weak (III)
You gain even more sacrifices from friendly units that die in battle.
Giant Research (II)
Further improves the offence and defence of medium-sized demonic units.
Black Magic Research (III)
Further improves the effects of demonic magic in battle.
Tech Level 7
Soul Eater (III)
You gain even more sacrifices from enemy units that die in battle.
Altar of Sacrifice (III)
Further improves the offence and defence of small-sized demonic units.
Chimera Research (I)
Improves the offence and defence of large-sized demonic units.
Beast Summoning
Enables production of chimeras. Chimeras are large-sized units.
Tech Level 8
Giant Research (III)
Further improves the offence and defence of medium-sized demonic units.
Chimera Research (II)
Further improves the offence and defence of large-sized demonic units.
Chimera Research (III)
Further improves the offence and defence of large-sized demonic units.
Spell Acquisition: Demon's Gate
Allows use of the spell "Demon's Gate" in battle.