A player’s health starts at a full 100 percent (or hit points). It may increase even beyond that from the effects of various powerups to as high as 200 percent (199 in versions prior to 1.2). It is decreased by environmental hazards (damaging floors, exploding barrels, and crushing ceilings), and successful enemy attacks. If a player's health ever drops to zero, that player dies.

The player's current health is shown on the status bar, both numerically, as a percentage of the characters full normal health, and graphically, by the condition of the character's face.

If a player that has armor is attacked, the armor will absorb some of the damage (one third or one half, depending on the type of armor) and thus lessen the decrease in health.

If a level ends while the player is dead, play proceeds to the next level, but with the player's status reset to that of a newly launched game (100 percent health, no armor, the pistol and 50 bullets).

Monster healthEdit

Thing Health Zombieman 20 Shotgun guy 30 Wolfenstein SS 50 Imp 60 Heavy weapon dude 70 Lost soul 100 Demon 150 Spectre 150 Revenant 300 Cacodemon 400 Pain elemental 400 Hell knight 500 Arachnotron 500 Mancubus 600 Arch-vile 700 Baron of hell 1000 Spiderdemon 3000 Cyberdemon 4000

Additionally, an exploding barrel has a health of 20, and Romero's head has 250.