'Heavy Stomp' is a kicking technique to deal a huge blow to the enemy. But in this case, Heavy was using it to kick the ground to propel himself at a very fast speed.
As for the nirvana sword, it's a very knightly style attack technique. It packs a heavy punch to it and has a strong penetrative force.
Brilliant thrust is an assist-type technique that boosts the power and speed of every thrust-type technique.
With the combination of three techniques, Heavy's thrust was incredibly fast.
Heavy was directly aiming for Billius's heart.
Billius was very scared and didn't know what to do but his body did. After being in the front line for so long his body was like an auto machine.
He directly let go of his hammer as it was hampering his movement. Heavy too let go of his shield without hesitation.
But the difference was Heavy had planned it beforehand, while Billius didn't expect this turn of situation.
