Overall, the passage is understandable, but there are some minor grammatical errors and redundancies that could be improved for clarity and fluency. Here is the proofread version:
"DIE!" Sam shouted as he propelled himself towards the Fire Wolf using his mana.
His spear penetrated the D Rank monster's body, his attack amplified by the use of aura.
As Sam turned to observe the fallen wolf, he noticed another, severely wounded but still alive, lunging for his leg with its jaws wide open.
"Watch out," Damian shouted. But Venessa, being closer to Sam, acted quickly, slashing off the wolf's head with her sword.
"Oh, thanks," Sam said, looking back to see Venessa had saved him from a potentially serious injury.
"Don't lose focus," Venessa warned him, turning towards Alyssa, who had already defeated four wolves single-handedly using her Ice Magic.
She hadn't needed to utilize her Gravity Magic for anything other than levitation.
