Thank you for playing! You can finish the last one by first collecting the bottle, which allows you to collect the key and then go back to the top of the maze where you have to collect the second bottle to get rid of the barrier to collect the flag. Once you do that you can go through the gap by the first bottle to the exit. 

I am glad you enjoyed it! Thank you for playing!

Thank you for featuring my game! You made some really great suggestions, I agree I should have changed the difficulty curve and maybe introduced some of the elements a bit better.