Arensen is working as the executioner at the gallows outside the Basilisk Gate Barracks. He also acts as a towncrier, occasionally shouting out warnings and moral teachings for bypassers to hear.
If the player has started the Free Counsellor Florrick quest by reading an Execution Notice, and has no clues on counsellor's whereabouts, they may talk to Arensen and ask him about her.
If Florrick is executed, Arensen completely agrees with the propaganda about her treason, and after Gortash is defeated, he ruefully concludes that the city's future is forfeit.
While speaking to Arensen for the first time, the player character gets additional dialogue options that might bring some approval / disapproval points from various companions:
Arensen: Eyes front and keep your nose clean, newcomer - a noose and a short drop is how we deal with troublemakers.
Player character: How about you wait until I commit a crime before threatening me? +1+1+1+1+1+1+1+1+1
Player character: Careful - a big guy like you makes for an easy target. +1+1+1+1+1+1+1+1+1+1
Player character: I'll stay out of trouble. -1-1+1+1-1-1+1-1-1+1