PS : I can see a little Metagaming in the Kunai destruction part since you dont kno that its a seal, nor you have fuinn jutsu training. It can be anything, even my name on it. I ll let cobalt deal with that. z.z
As Minato was about the slam the hand on the ground, the ground begun to shake a little and some spike start to come from the ground. In order to respond to the current scenario is a quick and efficient manner Minato coats his body with stones while taking a FTG kunai from his pouch in order to protect himself from the stone spikes that are about to skewer him. As soon as Minato coats his body with stones, he starts to run towards the left in a arc like fashion throwing the FTG kunai towards the opponent in such a way that it will rain down to the opponent...After the stone spikes hit him, he cancels the armour in order to gain back his momentum.
(Doton no Yoroi) - Earth Release Armor
Rank: B
Type: Defensive
Range: Short
Chakra cost: 20 (-15 per turn to remain active)
Damage points: N/A (+10 to taijutsu moves)
Description: This Technique coats the users body with stones, making them much more resistant to attacks, at the cost of their speed. Whilst using this technique, the user can even change their appearance, but once the technique is either defeated or worn off the users original appearance is shown. The user whilst in this armor is resistant to B rank ninjutsu techniques but is vulnerable to Lightning Techniques.
As the Shuriken is about the rain down the opponent who is now busy performing some technique that breaks apart Minato's kunai that was throws earlier, Minato forms a single hand seal and makes the kunai that was about to rain down the opponent as 1000's of kunai. Essentially now thousands of kunais rain down the opponent puncturing and damaging him heavily. By this time Minato would have reached the right side of the opponent with a 10 meter distance from him and charging towards him..
(Shuriken Kage Bunshin no Jutsu) - Shuriken Shadow Clone Jutsu
Rank: A
Type: Offensive
Range: Short - Long
Chakra Cost: 30
Damage Points: N/A
Description: After throwing one shuriken or more against their target, the user creates up to a thousand shadow clones of the shuriken (or kunai, senbon, etc, basically any basic weapon) after performing Ram → Rat → Bird → Boar → Tiger which multiply the damage as its striking down the enemy. This is a technique that combines ninja tools with ninjutsu. Compared to normal shadow clones, clones of material objects are said to be on a far higher level. There is no need for preparations beforehand, like stocking up on shuriken, yet since the shadow clones are real and not illusions, all the shadow blades that fly around are equally lethal. This is valid for any weapon copied and it has been seen that the copied weapons will also have the tags or markings of the original, like sealing or explosive tags or sealing marks.
As Minato is charging towards his opponent, He concentrates Katon chakra in his hands and shoots multiple firs shots from his hands towards the opponent that causes fiery explosion on impact. Minato stops to charge towards the opponent once his release the fire shots so that he wont get caught in his own explosion. By this time Minato will be like 6 meters from the opponents right. z.z
( Bakuhatsu Enhogan ) – Exploding Flame Shots
Rank: B
Type: Attack
Range: Mid
Chakra Cost: 20
Damage points: 40
Description: The user shoots multiple fire shots from their hands that are able to cause fiery explosions on impact with any object. The shots can't set the opponent on fire, though they can cause damage by exploding on him.