Perks

## Unlocking Perks

Perks are initially unlocked in labs. To access the lab you will need to unlock and complete the Unlock Perks lab in Milestones at tier 2 wave 150.

## Waves Required

Perks are earned starting at wave 200. After selecting 20 perks, waves required is increased to 250, 300 waves required after 30 perks, and 350 waves required after 40 perks selected.

The base can be reduced by upgrading "Waves Required" lab and by selecting the "Perk Wave Requirement" perk. Use the below formula to find the waves required.

Waves Required\* = (Base Waves Required - Waves Required lab) \* (1 - (Perk Wave Required Perk \* (1 + Standard Perk Bonus / 100)))

\*The formula should only be used to find the 1st perk for each base waves. If you get a decimal, you need to round the answer down. The rounded answer can be multiplied by number of perks.

EX: SPB of 8% and 3 PWR for PWR Perk for PWR 64.8%. 200 \* (1 - 0.648) = 70.4 = 70 waves required.

## Perk Choice

Initially you can select from 2 perks generated at random. Perk choices can be increased to a max of 4 choices through the "Perk Option Quantity" lab.

The "First Perk Choice" lab will allow your selection to be guaranteed to appear on the first set of choices as the top choice.

When using the Auto Pick Perk, it will always select the top choice on the list, this will always pick your first perk choice.

## Standard Perk Math

Most standard perks can be selected more than once in a round. The game has 2 formulas for multiplicative and additive perks.

For additive perks (Def %, Perks Wave Required):

Total Bonus = Base Value x Quantity x (1 + Standard Perk Bonus)

For multiplicative perks (Coin Bonus, Health, Damage):

Total Bonus = (1 + Base Value x Quantity) x (1 + Standard Perk Bonus)

### Standard Perks

1. Bounce shot perk is not available if bounce shot has not been unlocked.
2. Standard perk bonuses can be increased using the Standard Perk Bonus lab.
3. When standard perk bonus is max, the Game Speed perk will be increased to 1.25 making the max game speed 6.25. It will display at 6.

### Ultimate Weapon Perks

 Swamp Radius x1.5
 +1 Wave on Death Wave
 Extra Set of Inner Mines
 Golden Tower Bonus x1.5
 Chain Lightning Damage x2
 Chrono Field Radius x1.5
 Blackhole Duration +12.0s
 Spotlight Damage Bonus x1.5

1. Ultimate weapon perks will only be shown when the affected Ultimate Weapon is unlocked
2. If the ultimate weapon is unlocked from the "Unlock a random ultimate weapon" perk, the Ultimate Weapon perk will become available for that run.

### Trade-off Perks

 x1.80 coins, but Tower Max Health -70%
 Enemies Have -50% Health, but
Tower Health Regen and Lifesteal -90%
 Enemies Damage -50%, but Tower Damage -50%
 Ranged Enemies Attack Distance Reduced, But
Tower Ranged Enemies Damage x3
 Enemies Speed -40%, But Enemies Damage x2.5
 x12.00 Cash Per Wave, But Enemy Kill Don't Give Cash
 Tower Health Regen x8.00, But Tower Max Max Health -60%
 Boss Health -70%, But Boss Speed +50%
 Lifesteal x2.50, But Knockback force -70%

1. The benefit for trade-off perks can be increased by upgrading the "Improve Trade-off Perks" lab. The lab does not effect the ranged enemy distance perk.