The whole reason why he doesn’t have any points in Strength, Defense, Accuracy etc., is entirely because up until now he wouldn’t be an attacker. If he had been willing to attack and kill from the beginning, with the same stats he has now, and has always had, he would have earned experience points which would allow him to level up. After earning experience points as well as leveling up, he would naturally earn skill points which he could put into his status to make himself stronger. Even just leveling up would have made him much, much stronger than he is right now because right now he’s at something like 1 point each. He has barely earned any experience points, at all, period. The only time he earned some until this chapter, was the one chapter where he used the party bracelet with the other party of three. But when he was with Elf girl, and cleared the dungeon all the way to killing the Cerberus, the Elf girl got all the experience points for the entire dungeon mission. ALL OF THEM!! Why? Because he didn’t kill anything and they weren’t wearing party bracelets. He’s a fucking idiot.
I don’t know if he gets exp. from using his healing and evasion skills. He might. But even if he does, they will be a miserable, measly pittance compared to defeating enemies. He’ll never level up at that rate and never earn skill points. Not to mention that he’s putting way too much of the work load on the Elf-girl’s shoulders. She just doesn’t have the ability, the skill, accuracy, and just as important, the power to effectively deal with enemies properly. If she’s wasting 6 arrows in order to hit the enemy with 1, 2, or even 3+ arrows just to kill the thing, that’s 9+ arrows spent when it should only be one. Too fucking pathetic. If the MC just tried to kill those hundreds of slimes that were surrounding him in the beginning but missing him, he probably could have leveled up 2-3 times. The author is destroying the quality of the manga which I believe can be great by making his characters stupid. Beyond stupid. Sorry for the long reply.