Not sure if you read our discussion about that guy earlier, but if you missed he're how to make sure that you'll be able to defeat him under two turns BEFORE going into battle.
First I'll explain what combos are. Each character has a "combo" value, which corresponds to how many "hits" a character can do per turn. For example, here's my team:
So Vivi can hit 5 times, Usopp 6 times and so on. My whole team combined can hit a maximum of 25 hits per turn.
The maximum number of hits can be achieved if you either get a perfect or you miss since in both cases the character gets to finish their attack animation. Great will give you (combo - 1) and good (combo - 2) or less.
Alright now let's go back to the one-shot guy from elite buggy 6/7. This guy has a pretty high defense so every hit will only do 1 damage to him. The good news is that he only has 54 HP. In order to kill him in two turns, you need to be able to deal at least 27 damage per turn.
So the strategy is as follows:
- Make sure the sum of the "combo" values of your team + friend is at least 27
- Don't try to combo him (miss on purpose), let every character finish their hits before tapping the next one. You might want to practice your timing as waiting too long will end your turn.
- Use the same strategy on the crab
- ????
- Profit
I hope this helps.