• Using mouse is faster than keyboard, even running from keyboard.
  • Using run button is not necessary with mouse. It archives full speed anyway.
  • Mouse sensitivity just affects how much speed is needed, not how much can be achieved.
• Fastest method of motion is strafing forward and sideways from mouse (backward and sideways is slower).
  • This produces motion at 45 degrees from view direction.
  • This method of motion is fast regardless of angle, but zigzag from having wrong direction should be avoided.
• Only the main direction matters (except for turning).
  • The subdirection value is weird: It can be negative.

Scale

Speed

Primary direction

Pistol

Machine Gun

Chaingun

• Attacks where enemy hasn't "woken up" yet do double damage and wake up the enemy.
  • If the attack connects at the same frame as enemy would wake up from seeing you, it still counts (your attack is evaluated first).
• With bad luck, attack can do 0 damage even if it hits.
• Knife attacks do random / 16 damage (max. 15).
• Gun attack damage depends on distance.
  • The distance is calculated from differences in tile positions of player and enemy.
  • The norm used is ∞-norm (maximum of x- and y-distances).
  • If distance is 0-1, you hit for random / 4 damage (max. 63).
  • If distance is 2-3, you hit for random / 6 damage (max. 42).
  • If distance is 4-20, if random / 12 >= distance, you hit, and do random / 6 damage (max. 42), otherwise you miss. Maximum damage is 42.
  • If distance is 21, the situation is the same as in 4-20, but due to RNG maximum hit damage is 39.
  • From distance 22-, it is not possible to hit.
• These attack-related RNG throws are the only ones that are under player control.

The numbers are pulled from a table-based pseudo-random number generator. The table of values is (pulled from the source):

    0,   8, 109, 220, 222, 241, 149, 107,  75, 248, 254, 140,  16,  66
   74,  21, 211,  47,  80, 242, 154,  27, 205, 128, 161,  89,  77,  36
   95, 110,  85,  48, 212, 140, 211, 249,  22,  79, 200,  50,  28, 188
   52, 140, 202, 120,  68, 145,  62,  70, 184, 190,  91, 197, 152, 224
  149, 104,  25, 178, 252, 182, 202, 182, 141, 197,   4,  81, 181, 242
  145,  42,  39, 227, 156, 198, 225, 193, 219,  93, 122, 175, 249,   0
  175, 143,  70, 239,  46, 246, 163,  53, 163, 109, 168, 135,   2, 235
   25,  92,  20, 145, 138,  77,  69, 166,  78, 176, 173, 212, 166, 113
   94, 161,  41,  50, 239,  49, 111, 164,  70,  60,   2,  37, 171,  75
  136, 156,  11,  56,  42, 146, 138, 229,  73, 146,  77,  61,  98, 196
  135, 106,  63, 197, 195,  86,  96, 203, 113, 101, 170, 247, 181, 113
   80, 250, 108,   7, 255, 237, 129, 226,  79, 107, 112, 166, 103, 241
   24, 223, 239, 120, 198,  58,  60,  82, 128,   3, 184,  66, 143, 224
  145, 224,  81, 206, 163,  45,  63,  90, 168, 114,  59,  33, 159,  95
   28, 139, 123,  98, 125, 196,  15,  70, 194, 253,  54,  14, 109, 226
   71,  17, 161,  93, 186,  87, 244, 138,  20,  52, 123, 251,  26,  36
   17,  46,  52, 231, 232,  76,  31, 221,  84,  37, 216, 165, 212, 106
  197, 242,  98,  43,  39, 175, 254, 145, 190,  84, 118, 222, 187, 136
  120, 163, 236, 249

• The chances of dodging an enemy bullet can be increased not only by running, but you also get a significantly higher dodge chance if the enemy is visible on the screen.
• The odds of dodging depend on the distance from the enemy.
  • A point-blank shot against the player's back has a 0% chance of missing.
  • Running while being shot at increases the odds of dodging by a flat 37.5%.
  • If the enemy is visible, the odds of dodging increase by an additional 6.25% for each tile of distance between the player and the enemy. If the enemy isn't visible, this bonus is cut in half to 3.125% per tile.
  • If running and the enemy is visible, the maximum distance they can hit from is 9 tiles.
  • If running and the enemy is not visible, the maximum distance is 19.
  • If not running and the enemy is visible, the maximum distance is 15.
  • If not running and the enemy is not visible, the maximum distance is 31.
• The above values are different for SS guards and bosses, as they are hardcoded to be more accurate. The distance bonus of the dodging formula is cut by 1/3 and as a result their range also increases.
• If a shot hits, the damage depends on the distance.
  • From a distance of 0-1, the damage is random >> 2 (maximum 63).
  • From a distance of 2-3, the damage is random >> 3 (maximum 31).
  • From a distance of 4 or greater, the damage is random >> 4 (maximum 15).
• Dog bites have a 70% chance of hitting and do random >> 4 damage (maximum 15).
• Schabbs' projectiles work under a different damage roll and there is no chance of missing if you are in the way. Each syringe does 20 + random >> 3 damage (range of 20 to 51).
• Rocket projectiles, such as the ones fired by Otto, do 30 + random >> 3 damage (range of 30 to 61).
• Fireballs from the fake Hitlers do random >> 3 damage (range of 0 to 31).
• Similar to the distance check for player damage, low RNG rolls are preferable for dodging.

Enemy sees player

Enemy is awake but cannot see player

Enemy reaction times