I was planning to add more levels/randomize the level but unfortunately I didn't have the time. The first level is purposely made to be easy (no strategy involved) and let the player get familiar with the control. Second level was supposed to introduce door, switch, sign post so that player have to prioritize where to go.
I also spend way too much time polishing the game (making the start menu, victory screen, and the point popup) when there is no content, definitely learnt my lesson there.
If there are more people who are interested, then I will update the game in the next few weeks.