I got a related problem with a player in my campaign.
He wanted to play an Elf. A primitive Elf who only speak Japanese and a bit of english.
That is a Gremlins 4 and only use Katana weapon.
That is unaugmented nor Adept.
The first draw was a pathetic character who manage to get up to 8-10 dice in sword-fighting.
(I must confess this actual player is a bit on the not bright side, having to count slowly when adding 3d6 together and absolutely unable to make a calculation by hand right. I help understand the no-technologie aspect and bad character builds).
I rewrote the character as a competent Phys-Ads with emphasis on sword and agility/avoidance to reach HtH (16+ combat dice and several IP) that I think will at least be valid.
The first scenario, in the only fight he participated in his only action what trying to climb up a 7m tall vehicules pill up in a junkyard to get to the ennemy... While the bullets were already flying around. Obviously he not even manage to reach the top before the fight was over.
Next scenario, they were on a boat trying to reach a dock where friends were holding off ghouls. He try to jump to the dock from the boat missing wildly and going splash and no use at all.
Last scenario he manage to get some skill ranks in bow and buy a dismountable custom bow (note that he spared a lot of nuyen for it, seriously hindering group effort several time because he pretend not to have money to rent a van nor pay for explosives). The bow spent 90% of the scenario unmounted in his case, through at last 3 combats. He only think about mounting it up after large number of complain from other players and use it to guard a stage during a concert. Nuyens spent on the bow : 8000+, numbers of arrows shooted: none.
This guy is doomed to make very bad decisions. I asked him why he is playing such a character and he telling me that's because he is tired of playing a Brute/Munchkin/Grosbill in other game.
In the Other Game, he played a Paladin that try to infiltrate into a bandit lair (and have no special feelings about the way my lawful-evil warlord apply quick and lethal "justice" to the "criminals" we met). At one time there was a brawl and he was to convince the guards the guys we were hitting really were the rogue. He just have a few word to tell the guard.
He spent some time in deep concentration (face reddening), the DM start to be impatient and ask him : "So , what do you say", the guys burst up, "Hey, be gentle with me, I have never do so much Roleplaying before !" we were all abashed, this guy is DMing since some years and I have it in my campaign for more than 2 years and he confess never to have roleplay before oO. Worse thing is that he look really panicked and sincere. After being given a few more minuts of intense reflexion he decide the Paladin will point out his opponent while saying simply "Thief" to the guard then proceed to keep on bashing him.
As a Gamemaster it hurt me a lot that all the time he spent playing my scenario he doesnt see that as Roleplaying especially as he have a decently played Orc Weaponsmith in Earthdawn with a bit of actual background and character social implication.
But, as you can say, he is not the sharpest spoon in the drawer.