A fairly simple way to get this achievement is to string together two multi-hit hyper combos.
Iron Man's proton cannon does over 40 hits alone, so combining it with another multi-hit hyper makes this a walk in the park.
I used Dante and Iron Man, just land Dante's Million Dollars (qcf+punches) then switch to Iron Man while the combo is still going on and use proton-canon (qcf+punches).
You should easily surpass the 60-hit requirement.