Bit of feedback: you should add mid-level checkpoints. Some of the rooms have a lot of jumps, which means the player has to redo a lot after dying, which makes the game kinda tedious. Not hard, tedious. I made it to the room in the screenshot on the lower-right of the page (level 9, it looks like), but stopped playing after dozens of deaths because of how monotonous it was replaying those beginning jumps every time I died elsewhere.
Also, forward movement is kinda finicky and seems to slow-down randomly mid-jump.
EDIT: Bit more feedback: it would help give more level ideas if you added moving hazards, since there aren't too many different ways to arrange spikes. Maybe you could even let players decide their movement pattern with a 31st line in the txt file, something like "e=s1u3r5d3l5"; e because all the numbers and capital letters and first four lowercase letters are taken already, then the later segment tells the game to move all e hazards at a speed of 1 up 3 tiles, right five tiles, down three tiles, then left five tiles before repeating. Then, other lowercase letters could be for other moving hazards that the player would want to move differently, such as a 32nd line saying "f=s5l7r7"