Is it patched i can not figured out how to do it ?

Is it possible to run it whit steam on an older version ?

Hey i'm a new speedrunner of this game. I ogt the object boost, the human boost and the fly glitch pretty good but i'm stuck after. When i go to the ladder i can't figured ou how to pass across the wall. After 3 days of hard time i decide to do the oder way (with the planks) but there is no garbage can. Thanks for the help. (sorry if my english is not perfect i speak french )