At first it was fun because it was simple, than out of nowhere I get inside a room that is very very hard. Kind of like 20 times harder than the last room. But you get a one because it is in fact a game. Not sure what the notes are for (to gather them all? to tease you in a pointless task? in order to complete the map so you can get out?). If there were real words with some scary stuff than I may understand the notes a little bit more and have a will to get them.
This game is one of those large pixel games that is easy to make and I don't see very much hard work here. Just walls, death triggers, and patrolling monsters. No plot, no other characters, no words, and nothing that makes this game stand out. Just add a little bit more on your next game to keep people playing your game.