'Finally!'
Eren's eyes shone with delight when he finally found someone he could do martial arts with. Most rankers depended on spells and artifacts and paid less attention to their movements and agility. If Halder was anything like those rankers, he would have lost his head by now. Eren's ax attacks were too wild for any normal ranker to parry or dodge.
Eren had a light smile on his face as he exchanged moves with the dwarf. He found out that Halder was very comfortable with his short stature and stout build. He used them to his advantage in his martial arts, making them part of his strength.
Halder could generate more momentum for his swings, courtesy of his mana-based martial arts and his strong arms. His footwork was also equally impressive, not letting Eren catch him off guard with his attacks.
Halder's biggest problem was Eren's airtight defense. He couldn't inflict any lasting damage on his opponent.