This game is actually quite fun. I think that could be a nice mobile puzzle game if you iron out the bugs.
The art and music are awesome, the puzzle design is good.
It's quite janky though. The movement is not very predictable. The interaction with the ladder is often very buggy, sometimes it climbs it down. Sometimes it continues the direction at top, sometimes it doesn't. I don't get why I can place the portal at some location and not others. That makes some levels try and error, which is not that fun.
But it has some potential, good job :D
PS: The text at the end is not very readable.