go around a all dungeon, beat the plastic monsters and win gold. The collected gold is converted to won and used to raise its HP. You can even buy a house, buy furniture, collect electronics, and even make more than 10,000 by HP! Of course, you can upgrade a single gun! With this increased HP and gun power, you can easily and quickly get more gold and move towards a better However, aiming is difficult. They will move strangely... and.. with only pistol... Way to go!