Abandoned Cityscape(Slinger)

Abandoned Cityscape

Defeat all enemies: 75/75 remaining

Rewards: 400 experience, $500

Defeat the bosses: 2/2 remaining

Rewards: First Kill bonuses (Triple Experience, Double Cash, Guaranteed Epic)

Find the diamond cipher

Rewards: Cryptology 101

Defeat all enemies without using any outside weapons

Rewards: 2 skill points, 2 stat points, unique armor piece

Conquer the barrier in 30 minutes or less (29:59 remaining)

Rewards: 600 experience, $700

[Accept]/[Deny]

Reference
Accepted in Chapter 41 "Another Heart Breaks"