Tim shot about six Electro Nerve Splitter shots against the beetle, and he made those shots rather quickly, on account to how intense the situation was. However, the beetle wasn't even winded by those, it kept trotting forward as if it didn’t have a brain at all!
“What the fuck…” Tim sighed, and then just continued to fly upwards.
At this point he had spent about a thousand mana points already, and this price hurt him, because he barely made any progress so far, but that was just how the situation played out, he was unlucky. He figured he'd be okay as long as he kept flying, and tried to stay still.
Tim was about fifty feet above the ground now, the bones that he was controlling, helped him fly that high. He felt safer now, regardless of how he might fall to his death if he flinched too much, but then, he noticed that the beetle had become airborne as well, which shook him to the core!