Okay so I'm going to keep trying to beat Rulk with a 1 star colossus until I either win or my phone breaks. I'm posting the attempts on YT.
https://www.youtube.com/channel/UCo0kpAGBipImHUmQsRWXNOwIf you want to follow along that's the channel link ^.
If you see my first 2 attempts I have lots of room to improve so tips would be appreciated.