While the gameplay loop is a bit bland, i would be lying if i said i didnt get scared multiple times even after replaying it multiple times, the sound execution in this game, while not alot, is really well executed. visually the game is also solid. The monster is actually somewhat scary despite its simplicity. Albeit i wish the map would be a bit more engaging. But despite that it all comes together really well. For a game made in such a short timeframe this game is very solid. In summary visually this is one of the best game ive seen so far and its sound design is also great. Gameplay is a bit lacking but thats shared across horror games.
Now about the theme of "mask" for this game this one execcutes is quite well actually, while it does not litterally use masks it does use it metaphorically. In the game you use pills to make the monster dissappear. Essentially "masking" the world. This is just a theory but i think this was done with the intention of mimicking drug use in real life where people try to escape their problems (which in this game could be seen as the monster) by using drugs for a "happy time"
Overall the most well rounded game ive seen so far.