Enter ID: 1459457236 code for a 150,000xp and 500,000 zen!! Super easy! and FREE!
1. Start up the game
2. Go to "Social"
3. Click on "Special"
4. Tap on "Get a Metal God"
5. Enter the code 1459457236
6. Go to "Gifts"
7. Collect your Metal God
8. Go to "Units"
7. Go to "Fuse Unit"
8. Select the character you want to level up
9. Tap on an empty slot and select Metal God
10. Fuse and level up!