Like Father Like Son is a Side Quest in Divinity: Original Sin Enhanced Edition. You will trigger this quest when you come across Archibald and his son Amadeus guarding a bridge east of the "Luculla Forest-Goblin Village" Portal. They will ask you to pay toll to use the bridge, if you deny a fight will ensue.
Alternatively, if you have already killed the Troll King, you can tell Archibald about this and he will move away, leaving behind a treasure chest with decent loot.
- + 7800 XP (If you fight)
- + 1 Independent / Obedient
- Speak to Archibald
- Decide to Pay (+1 Obedient) or Not Pay (+1 Independent)
#(Optional) Fight him