We had too ambitious goals so we couldn't playtest or even polish. If you care to give it another go then please do. When you only see a single letter, you have to do a simon-says kind of challenge, so repeat the letter sequence that pops up. When a word appears just retype the word. Also the breakable walls aren't really visible so keep an eye out for slightly darker, more brittle tiles. For the later puzzle section you might also want to draw a small minimap for the rooms on a piece of paper.