Personally, I've never found the flaming gloves to be that useful.
The knife gloves are more useful, as are the tenderizers (MMA gloves + nails).
I've started using the defiler more now that I have it's combo card as it's too slow with just it's scratch card.
The defiler can take down looters and mercs with ease, making "Run for the Money" fairly easy.
The hacker is the most useless combo weapon I've seen thus far as you can burn though it's battery just to kill a couple of zombies.
The more powerful jump kick can be quite useful as it can take out any normal or fat zombie unlike the regular jump kick, which only kills female zombies (everyone knows vaginas are for pussies).
It can also kill mercs and looters in only two hits or so.
I'm about level 31 as I kind of got carried away and didn't give Katey her Zombrex at one point because killing zombies is more fun than drugging kids with annoyingly spelled names.
I also had a problem beating the twins, but I got past them using the beam sword combo weapon, which is pretty damned powerful, but breaks easily (I took two, and only ended up using one).
I'm thinking of buying Enslaved as I really enjoyed both Uncharted games and it seems similar.
The only thing putting me off is that a lot of reviews say there's some serious graphical issues, though most Unreal Engine based games have some graphical issues (texture issues and such).
I say they look more like german/caveman then asians.
The Germans are coming to beat you with clubs and spears!
Hundley: Damnit kid, get off my lawn!
Faust: NOT UNTIL YOU GIVE MY MY PANTS BACK HUNDLEY!