Score

= Combos =

Combos in Orcs Must Die! Unchained provide extra Score, extra Coins, extra XP and also fill the Unchained Meter. Each combo provides all the mentioned before and the higher the combo is, the higher the amount of them it gives.

Combos are obtained by killing Enemies that have been hit by different damage sources (Traps, Gear, Heroes Abilities, Environmental Traps) or affected by different debuffs/statuses (Slow, Damage over Time (DoT), Stun, Mesmerize, etc).

For combos to show on screen, they have to be atleast x3 Combo and you have to participate in the kill, either with some direct hit or effect from your Hero, Gear or Traps.

Each different source of damage or debuff adds a combo point to the enemy affected (being hit twice by the same type trap, e.g Floor Spikes only adds 1 combo point). Combo Points added by a direct hit have a duration of a few seconds (2-4), after that the combo point fades away.

Each different effect or debuff also adds 1 Combo Point but they only last as long as the effect/debuff does.

The Combo Point timers can be frozen by making Minions fly. While a minion is in the air/ragdolling, the combo point countdown timers that make them fade away will be frozen instead, allowing for applying extra combo points without losing previous ones.

Score by Combos
Minions give a base amount of points for being killed, when comboed, this score goes up by about 50% with each extra combo.

Without any combo, Minions killed give the following score depending on their type:


 * Small Minions: 20 base score
 * Large Minions: 30 base score
 * Bosses: 60 base score (Only Moneybags seems to be "combo-able")

Table of score by combo:

= Scoring =

Every time a match of any mode except Sabotage is finished, players are shown their performance stats and their score.

Score is calculated using several variables and some of them are specific to different game modes:

The Base Score calculation (Kill and Combo Score) is calculated the same for all the modes, as shown before, each minion kill provides a base score that depends on their type (Kill Score) and a Combo Score that is calculated depending on how high the combo on that enemy was at the time of the kill. To calculate the total Kill and Combo Score of a match, the game simply adds up the score obtained from each minion kill.

To the Base Score, there are multipliers applied depending on your performance, the shared one across all modes is:


 * Hero Deaths: Multiplies your score for up to 8x, each death reduces this multiplier by 10% (minimum is 1x at 20 deaths).

Score Calculator
For a Score Calculator visit: https://docs.google.com/spreadsheets/d/126A0XmDmxxp4CzALacbWFoy4edA5SDkcmNjLrAU9Snw/edit#gid=1717598881

Survival, Chaos Trials and Weekly Challenge
Survival and Weekly Challenges Battlegrounds score is calculated exactly the same way. Each battleground played of a Chaos Trials Key too, but the difference is that the total score of a Chaos Trials Key is the sum of the score obtained at each of the Battlegrounds (each Tier) completed.

Survival, Chaos Trials and Weekly Challenges have extra variables that multiply your score based on your performance:


 * Par Time: If you complete the match with exactly par time, it multiplies your score by 2x, completing the match faster means higher multiplier, slower means lower multiplier (minimum 1x).

''This table only has a few of the values as a guide, values in-between can happen and the multiplier is calculated accordingly. The % indicates the difference from your completion time compared to the par time of the battleground. The calculation of this multiplier uses higher precision than just seconds (only up to seconds show in-game, but the multiplier seems to calculate upon miliseconds)''


 * Rift Points: Points left multiply your score for up to 4x, each rift point lost reduces this multiplier by 5% (From 25 to 1 rift points).

Endless
Endless doesn't have par time and you are bound to lose at some point, so it doesn't make sense to use Rift Points to calculate the score.

Instead, Endless uses the amount of Waves Completed as a multiplier for the Base Score:


 * Waves cleared; Each wave cleared multiplies your score by 5% (for each wave cleared past Wave 5, included). It is exponential and there is no limit.

The table only shows up to wave 50 but there is no limit, the multiplier keeps going up

Example Calculation
I'll do a simplified example to show how score would be calculated on a Survival map

Say we killed 1.000 minion total with 5x combo or averaging 5x combo:

1.000 minions x 20 minion base score = 20.000 Kill Score

1.000 minions x (86) 5x Combo Score = 86.000 Combo Score

Base Score = Kill Score + Combo Score = 20.000 + 86.000 = 106.000

Once we have the Base score, we look into the multipliers:


 * 0 Hero Deaths -> 8x multiplier
 * 10% over Par (10:00 Par and 11:00 completion time) -> 1.5x multiplier
 * 25 Rift Points left -> 4x multiplier

Total Score = Base Score x Multipliers = 106.000 x 8 x 1.5 x 4 = 5.088.000