Easy mode
I tried on Skitzo mode, not a challenge. Hard mode a breeze. Medium was easy.
So I went to try Easy mode and every time I knocked the beast off the cliff the word I used to knock him off was stuck on the screen all greyed out. Such a bug would not allow me to ever knock the beast off the cliff more then once. This would happen whether or not I pressed retry or started from the main menu. So, I refreshed and the problem went away. I still wonder why it happened in the first place though.
Anyways. The background has some detail, the ground isn't very detailed (doesn't make much of a difference if you are paying attention to the words/letters at the top of the screen), the mist adds a lot to the game. The graphics were alright (but the player is probably still paying more attention to the words/letters). The overall look of the letters were nice, but the back of the letters could have used a little more than a basic backing. Perhaps if they looked like they were carved out of wood or something. Again not that important as the player is still paying a lot of attention to the letters themselves and not that particular aspect of the game.
All in all, I enjoy your games and I hope you keep making them.