Here’s a simple way to make a Push Boulder without all the pesky conditional branches:
-choose your graphic and name the event
-make sure it’s set to ‘Same as…’
-check ‘Walking Animation’
-put ‘Set Move Route’ to ‘Move Away from Player’ and add a SE if you want and ‘Wait for Completion’ if you want as well
-Set the ‘Move Speed’ to Normal or High
And you’re done!
Now you just have to copy it and make a non-cliche puzzle for your dungeons.