Easy way to earn $1.800.000 ~ $2.000.000!!!
-First you need to buy Dark Booster.
-Equip the Dark Booster arm, start the "Weight limit" sub mission on Very Hard
- Hit the start button, then choose to return to the office.
- In the office equip the normal arm, go back to mission select. Start "Weight limit" sub mission on very hard again.
- Now you will start with full blood at the sub mission, just keep using RT+x, and killing some easy enemies... to refill your blood bar.