How to survive area 15 or more

Now, we will know how you survive area 15 or more. (Pro guide)
 * 1) FIRST, you start with lvl 1 (obviously).
 * 2) SECOND, begins upgrading, Attack Damage are good in starting a new game.
 * 3) THIRD, you needs go in area 2 with lvl 16, THE GAME force you to enter in the next area because you are much stronger to continue in the area 1.
 * 4) FOURTH, the progress be continued... Other tip: YOU have the minimum 125 health (1 upgrade) to continue good in area 2. A each 1 UPGRADE in Maximum Health to continue good and survivor.
 * 5) FIFTH, Keep defending in area 2 to 5 what you're without ENERGY. (what you are without energy you can't attack) UPGRADE the Energy Regeneration to 30. Four upgrades.
 * 6) SIXTH, More than area 5, you needs keep defending with calculation. How?                                             You have to defend BUT you are without energy and you have to defend calculated WHAT the monster make the critical, SAME you are with energy.
 * 7) SEVENTH, Make 2 Upgrade of Armor Penetration a each area. (NO THE AREA 1 PLEASE) But you maked a good fiscial build, you HAVE TO FOCUS THE Armor Penetration.
 * 8) EIGHTH, In the new area begining the area 6, move to the final of the area, but DONT EXIT OF THE LOCATION.