Go the cheat options, tip on the digipad:
left, left, up, right for Unlimited Laser Eyes (Don´t disable achivement)
Then go to the level "Ruffin it" and then activate cheat in the pause menu. Run to the first enemy encounter and kill all enemys till a fat one with mines in his hands appear. Kill his two buddys and then:
Attack him with "X" till he blocks, now use laser eyes with "LB" (or RB i forgot sry) and than you get a "hit" attack fast with "X" "X" again then "LB", then continue till you climb up to 30 hits. Sometimes Bolt fall of (glitchy attacks) and the counter go to zero. Don´t give up, it works.