Stat Growth in XCOM: Enemy Unknown is predefined for a soldier's HP and Aim as they gain ranks based on their class. The standard stat growth can be altered by the following Second Wave options:
- Not Created Equally: Rookies will have random starting stats.
- Hidden Potential: As a soldier is promoted, stats increase randomly.
Soldiers also gain a randomized Will bonus for each rank (see table, below). Will can be lost if a soldier is critically wounded unless they have the Secondary Heart gene mod.
| Option | Will Bonus | Rookie Will | Colonel Will |
|---|---|---|---|
| None | 2-7 | 40 | 54-89 |
| Iron Will | 4-12 | 40 | 68-124 |
| Not Created Equally | 2-7 | 25-59 | 39-108 |
| Not Created Equally + Iron Will | 4-12 | 25-59 | 53-143 |
Stat increases from promotions are calculated at the end of a mission, not from leveling up a soldier's abilities, so keep this in mind when purchasing Iron Will. In addition, Shaojie Zhang, Annette Durand, and the Furies all have set stats upon recruitment, but subsequent promotions are still affected by the upgrade's increased range of Will.
Colonel Stats (Squaddie stats added to allow faster recruit evaluation)[]
| Class | HP | Aim |
|---|---|---|
| Assault | 9 | 89 (Squaddie 70) |
| Heavy | 9 | 75 (Squaddie 67) |
| Support | 9 | 90 (Squaddie 70) |
| Sniper | 8 | 105 (Squaddie 75) |
| MEC Trooper | 9* | 77-105* |
(*) As stats carry over during the class conversion to MEC Trooper, actual stats will vary based on class and rank prior to augmentation.
Rookie[]
| Game Difficulty | HP+ | Aim+ | HP | Aim |
|---|---|---|---|---|
| Easy | +1 | 0 | 6 | 65 |
|
Normal |
0 | 0 | 5 | 65 |
| Classic | -1 | 0 | 4 | 65 |
| Impossible | -2 | 0 | 3 | 65 |
Assault[]
Based on calculations at Normal Difficulty:
| Rank | HP+ | Aim+ | HP | Aim |
|---|---|---|---|---|
 Squaddie
|
1 | 5 | 6 | 70 |
 Corporal
|
0 | 3 | 6 | 73 |
 Sergeant
|
1 | 3 | 7 | 76 |
 Lieutenant
|
0 | 3 | 7 | 79 |
 Captain
|
1 | 3 | 8 | 82 |
 Major
|
0 | 3 | 8 | 85 |
 Colonel
|
1 | 4 | 9 | 89 |
Heavy[]
Based on calculations at Normal Difficulty:
| Rank | HP+ | Aim+ | HP | Aim |
|---|---|---|---|---|
| Squaddie
|
1 | 2 | 6 | 67 |
| Corporal
|
0 | 1 | 6 | 68 |
| Sergeant
|
1 | 1 | 7 | 69 |
| Lieutenant
|
0 | 1 | 7 | 70 |
| Captain
|
1 | 1 | 8 | 71 |
| Major
|
0 | 2 | 8 | 73 |
| Colonel
|
1 | 2 | 9 | 75 |
Sniper[]
Based on calculations at Normal Difficulty:
| Rank | HP+ | Aim+ | HP | Aim |
|---|---|---|---|---|
| Squaddie
|
0 | 10 | 5 | 75 |
| Corporal
|
1 | 3 | 6 | 78 |
| Sergeant
|
0 | 3 | 6 | 81 |
| Lieutenant
|
1 | 3 | 7 | 84 |
| Captain
|
0 | 4 | 7 | 88 |
| Major
|
1 | 7 | 8 | 95 |
| Colonel
|
0 | 10 | 8 | 105 |
Support[]
Based on calculations at Normal Difficulty:
| Rank | HP+ | Aim+ | HP | Aim |
|---|---|---|---|---|
| Squaddie
|
1 | 5 | 6 | 70 |
| Corporal
|
0 | 3 | 6 | 73 |
| Sergeant
|
1 | 3 | 7 | 76 |
| Lieutenant
|
0 | 3 | 7 | 79 |
| Captain
|
1 | 3 | 8 | 82 |
| Major
|
0 | 3 | 8 | 85 |
| Colonel
|
1 | 5 | 9 | 90 |
MEC Trooper[]
| Rank | HP+ | Aim+ | HP | Aim |
|---|---|---|---|---|
| Squaddie
|
1 | 0 | 6* | 65* |
| Corporal
|
0 | 1 | 6* | 66* |
| Sergeant
|
1 | 1 | 7* | 67* |
| Lieutenant
|
0 | 1 | 7* | 68* |
| Captain
|
1 | 2 | 8* | 70* |
| Major
|
0 | 2 | 8* | 72* |
| Colonel
|
1 | 3 | 9* | 75* |
(*) As stats carry over during the class conversion to MEC Trooper, actual stats will vary based on class and rank prior to augmentation.
References[]
Stat growth data can be found and modified in the game's DefaultGameCore.ini file.