Sorry to ruin the fun, but it seems that any Scrap quest (Like Zed or Comrade) instantly completes when you start a run and have more than the quest amount in your inventory. I would think that the quests should be a little bit harder.
Step by step of the bug
Step 1
Start a run with more than 600 Scrap in inventory and a hero with a quest to collect 600 Scrap.
Sorry to ruin the fun, but it seems that any Scrap quest (Like Zed or Comrade) instantly completes when you start a run and have more than the quest amount in your inventory. I would think that the quests should be a little bit harder.