@Shan14 - Not sure why some players must be so secretive? First off, mentioning in the description that this version is only winnable in 1.3 would have saved all those 1000s of players from wasting their time who can't update. A trick list would have also aided in the level...
Wow! It's a short level but fast so that R doesn't get trapped next to the house and to finish it R has to climb B. It's actually a bit difficult, but I like it
... Fun and quick level ! I'm not sure what version I must be using as my B was able to walk quickly to the stairs without losing R bot or any instability.