He's supposed to be a pro-gamer, sees a chance to grind skills and does his best to grind them out at the start. Great, that's actually smart. 
As soon as he sees the fountain, he goes straight for the boss when he could've taken advantage of the time left to grind his skills more? 
If his "teammates" meant that much to him, he didn't even try asking if it's possible to bring them back to life and just goes on like it's nothing...
Next level, he does the same thing again. Grind the "easy" parts, then when it gets harder he just makes a mad dash to the boss room when he could've improved on his skills instead.
He also made no attempt at bottling the fountain's waters, which would make sense given the recovery ability?

Heck, he could've also taken the arrows as potential weapons all of this time like those needles but he doesn't even try. ☠