Mission is given by the Riddler Vending Machine.
Retrieve the 4 Aces.
The side mission can be picked up in Otisburg. Machine location is 2 blocks West of the Greenhouse. Go to Monarch Playing Card Company, follow direction EAST. On the west side of the second building beyond the rails there is some damage to the wall near the ground. In one of the holes is a vending machine with Riddler Question marks.
This mission takes place inside Monarch Playing Card Company.
- Find various cards on the floor of the factory
Although the title says "solve riddles from suspicious vending machines," you are actually picking up cards off the floor inside the factory (there is one vending machine, that you can interact with that makes a joke about not being able to serve you)
- Cards are dispersed throughout:
- First large room
- Second large room
- Third large room
- Across the pipe (before you drop down) that leads down into Riddler's area.
- When all cards are found the reward is issued
? exp, 19 Cash, Chemical Handling Grips and a Mark of Victory