The maximum level of turrets at the moment is 15. Here you can familiarize yourself with the parameters that increase depending on the level.

1 level (500exp until next)

Reload multiplier: 100%
Health: 100%
Luck: 0
Update ammo quality: 0
Health in the shield: 0
PowerShots(plasm turrets): 0

2 level (750exp until next)

Reload multiplier: 102%
Health: 110%
Luck: 0
Update ammo quality: 0
Health in the shield: 5%
PowerShots(plasm turrets): 0

3 level (1 000exp until next)

Reload multiplierr: 104%
Health: 120%
Luck: 1
Update ammo quality: 0
Health in the shield: 5%,
PowerShots(plasm turrets): 0

4 level (1 250exp until next)

Reload multiplier: 110%
Health: 130%
Luck: 1
Update ammo quality: 1
Health in the shield: 10%,
PowerShots(plasm turrets): 5

5 level (1 500exp until next)

Reload multiplier: 115%
Health: 130%
Luck: 2
Update ammo quality: 1
Health in the shield: 10%,
PowerShots(plasm turrets): 5

6 level (2 000exp until next)

Reload multiplier: 120%
Health: 140%
Luck: 2
Update ammo quality: 1
Health in the shield: 10%,
PowerShots(plasm turrets): 5

7 level (2 500exp until next)

Reload multiplier: 125%
Health: 140%
Luck: 3
Update ammo quality: 1
Health in the shield: 10%,
PowerShots(plasm turrets): 5

8 level (3 250exp until next)

Reload multiplier: 130%
Health: 140%
Luck: 3
Update ammo quality: 1
Health in the shield: 15%,
PowerShots(plasm turrets): 5

9 level (5 000exp until next)

Reload multiplier: 135%
Health: 140%
Luck: 4
Update ammo quality: 1
Health in the shield: 20%,
PowerShots(plasm turrets): 5

10 level (7 000exp until next)

Reload multiplier: 140%
Health: 150%
Luck: 5
Update ammo quality: 2
Health in the shield: 20%,
PowerShots(plasm turrets): 10

11 level (10 000exp until next)

Reload multiplier: 150%
Health: 160%
Luck: 6
Update ammo quality: 2
Health in the shield: 25%,
PowerShots(plasm turrets): 10

12 level (12 000exp until next)

Reload multiplier: 160%
Health: 170%
Luck: 7
Update ammo quality: 2
Health in the shield: 25%,
PowerShots(plasm turrets): 15

13 level (15 000exp until next)

Reload multiplier: 170%
Health: 180%
Luck: 8
Update ammo quality: 2
Health in the shield: 30%,
PowerShots(plasm turrets): 15

14 level (20 000exp until next)

Reload multiplier: 180%
Health: 190%
Luck: 9
Update ammo quality: 2
Health in the shield: 35%,
PowerShots(plasm turrets): 15

15 level - max level

Reload multiplier: 200%
Health: 200%
Luck: 10
Update ammo quality: 3
Health in the shield: 40%,
PowerShots(plasm turrets): 20