Here's another tip I found online and adapted to my own liking:
Cruel Brawl is just cruel, really. It's hard to even do anything when you get KO'd from one shot at the beginning of the game. I found a nifty tactic online using Jigglypuff that has you float underneith the field and float from one side to the other. If you angle your downfall outwards and then float to the other side, many times an alloy or two will jump off the field at you, and won't be able to get back on, and thus will be KO'd. I watched a video of this guy that was able to rack up like 70-something KO's in Cruel Brawl with this, but I had a lot of trouble. If you floated above the edge at all, you would get spiked to your death or kicked off screen. Also, very often I would run out of jumps for Jigglypuff and would just fall to my death.
I found Pit to be a better "floater" than Jigglypuff. Pit had the advantage because he had 2 regular floats and then an uber flying thing where he could cross underneath the field really quickly. I was able to rack up the 10 KO's quickly and never went back to Cruel Brawl again.
Cruel Brawl is just cruel, really. It's hard to even do anything when you get KO'd from one shot at the beginning of the game. I found a nifty tactic online using Jigglypuff that has you float underneith the field and float from one side to the other. If you angle your downfall outwards and then float to the other side, many times an alloy or two will jump off the field at you, and won't be able to get back on, and thus will be KO'd. I watched a video of this guy that was able to rack up like 70-something KO's in Cruel Brawl with this, but I had a lot of trouble. If you floated above the edge at all, you would get spiked to your death or kicked off screen. Also, very often I would run out of jumps for Jigglypuff and would just fall to my death.
I found Pit to be a better "floater" than Jigglypuff. Pit had the advantage because he had 2 regular floats and then an uber flying thing where he could cross underneath the field really quickly. I was able to rack up the 10 KO's quickly and never went back to Cruel Brawl again.