When he laid witness to how the others were faring, his expression turned into a condescending smirk. The group were being forced to retreat, but even that action was a struggle in itself; Noah hadn't named the current undead 'sprinters' without justification.
Although their group surprisingly had better coordination than before, anticipating the kamikaze attacks that the sprinter's were so well adept at performing, the willpower to continue under such a savage barrage way of attacking wasn't met so well by everyone else.
After the confrontation at the campus gates, everyone participating in battle were able to level up at least once. With the extra boost in their stats and the benefits from their recent loot, the group were able to fare much better than before.