The keyword entry is a really fun idea to add variation to the conventional item-collection mechanic and I like the potential for the player to optimise their run by being able to guess the word if they're ambitious enough. I think because the letters can be provided out of sequence, there's plenty of challenge here to try and guess within the energy available. Might just need a bit of tweaking to make the player have only just enough energy to get all five, encouraging them to need to use potions or take risks guessing the word to stay alive. I think that extra little bit of challenge element could help the game's replayability a lot. Otherwise, not too much else to say here - this is a nice, simple and cleanly designed roguelike using the classic visual design. Good work!