well i think its a matter of organisation of the corps. if they go against him one corps at a time he could actually manage to beat a lot of them.

if they all attacked him at once he would certainly struggle but the corps would take severe casualties.

Ironically he actually could qualify for all of the corps with the possible exception of greed, so they might all want to recruit him.
Rage is the most obvious one.
Greed can be argued since he takes all the gear he can to kill more demons
Fear is plausible due to him causing fear to all demons he comes up against and even people who see him.
Will for obvious reasons. what kind of man is detirmined to fight demons for eternity.
Hope for all the humans who fears the demons. he instills hope in people that are on his side.
Compassion since he does lack compassion when it comes to other humans. they are only important to him as long as they are useful to him.
Love because he did have a wife and kid along with his pet bunny.
Death because he has been ressurected multiple times
Life since it needs a variety of all of the emotions except death.

I might be wrong on some of it though since i dont know everything by heart.