When Trish is unlocked, you get all her weapons already. Ifrit is only playable in DMC1.

His beyblade is Samurai Ifrit.

Since Ifrit is a fire elemental boss, the best way is to use blizzard, blizzara, blizzaga to hit double damages. Don't use fire elemental attacks because Ifrit will just absorb it. That will just add up to his HP.

ifrit,pyro,cyndaquil, roy mustang (lol)

An afreet is another name for an ifrit, a form of djinn - a spirit of lower standing than angels - mentioned in the Qur'an.