I did an ET instance and teamed up with a water where we comboed for 2200 damage on each one (they have 4000 HP each), we killed the fire and wind ones since they were faster than us, the diagnosis is that I need to increase my AGI and STR (I'm working on STR now, I'll have 124 STR, then put 127 AGI and start switching between them, than I'll pump CON to 100 and WIS to 80)