1. Opening the game- Tap the Spider-Man Unlimited icon to open the game.
2. Medaling in Unlimited- In Unlimited Mode, should you place bronze or better, you can earn ISO-8.
3. Daily Slinger- There are daily challenges that you can complete to get ISO-8.
4. Story missions- When you complete some story missions, part of your reward is ISO-8.
5. Enemy of gold- There is a gold enemy, and there is only one available per day. Attack this enemy for some more ISO-8.
6. Event challenges- Doing well in the event challenges can net you some ISO-8.