Idle Slayer Wiki
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The Slayer's Boost ability allows him to run at a 3.5x speed for 10 seconds, during which the speed slows back to normal over the duration. The base cooldown for boosting is 30 seconds.

With the first two max speed increase upgrades, Boost causes the Slayer to run at 4.25x speed. This also extends the duration of the Boost to 13 seconds.
Once you are able to buy the Ultra Boost upgrade, Boost will cause the Slayer to run at 4.75x speed and will also extend the duration of Boost to 15 seconds.

Related Purchases

Image Name Cost Description
Blue Streak.png Boost 75 Coins Go fast for a small period of time.
Mega Boost.png Mega Boost 5.00e18
5 Qi Coins
Boost cooldown is twice as fast. (15 seconds)
Energy Potion.png Energy Potion 5.00e18
5 Qi Coins
Increase the Boost max speed by 10%.
Faster Than 88 MPH.png Hyper Boost 5.00e30
5 No Coins
Increase the Boost max speed by 20%.
Ultra Boost.png Ultra Boost 5.00e60
5 Nd Coins
Increase the Boost max speed by 20%.
Boost Kill.png Boost Kill 10 SP You gain double Souls for every kill while using the Boost.
Boost Coin.png Boost Coin 25 SP You gain double Coins while using the Boost.
Cheap Cooldown.png Cheap Cooldown 25 SP Every Coin you pick up will decrease your Boost cooldown by 2%.
Stability.png Stability 4,000 SP Unlocks the ability to fire arrows while using the Boost.
Augmented Boost Kill.png Augmented Boost Kill 100,000 SP Makes the Boost Kill Ascension upgrade 100% more efficient.
Extreme Boost.png Extreme Boost 250 DP Boost cooldown is reduced by 75%.


Achievements

Name Requirement
Blue Streak Use the Boost 10 times.
Speeds By Use the Boost 50 times.
Sonic The Hedgehog Use the Boost 100 times.
Gotta Go Fast Use the Boost 250 times.
Idle Slayer & KNUCKLES Use the Boost 500 times.
Super Sonic Use the Boost 1,000 times.
Faster Than 88 MPH Use the Boost 2,500 times.
Light Speed Use the Boost 5,000 times.
Superluminal Use the Boost 10,000 times.
It Does Nothing Try to go faster while using the Rage Mode.
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