Health

, or HP (hit points), is the main factor of the game. You start with two HP bars, each with 100 health. The orange one is a temporary shield, it'll absorb damage but it won't recharge. The green bar is your health, it will recharge over time. If you lose all your health, you will die. Your health bar tells you how much health you have left. The more the bar is filled, the higher your health.

Damage
Your decreases when you get damage. It includes pistol, assault, sniper, shotgun, gas, frag, self destruct and turret. Each of them gives you different amount of damage.

Health Regain
You regain 1 health per second until it reaches 100. There are some ways to regain health faster or helps you prevent from death.
 * Upgrade "Heal Faster".
 * Alternatively, you can upgrade "Speed Increase" if you have time. When you are shoot by a sniper, you can run to somewhere away from the middle and wait until your health gets to 100.
 * Use "Health" perk when you get to level 15. You can use it for yourself to get 50 health.
 * Note: Don't upgrade "Heal Faster" if you wish to choose this perk because they have same use. Use your upgrades effectively.