Latest version doesn't work in chrome on linux :-( Been playing for a long time (over level 3k now) and rather disappointed. Just comes up as a gray box after reaching 100%.
For anyone who crafts a Triumphant they don't want, but are unable to 'recraft' it, hold alt+shift+click the sword on the main screen. This will 'reset' the sword to new and let you recraft. WAY easier than spam clicking to reset the sword to legendary.
For those having troubles with the 5km while pants are on fire, try using spacebar AND mouse 2 handed while on fire. Both register at the same time to count on your speed pressing. In survival mode, I just got it in my second for 4 pants on fires in 1 run(and I don't think I'm that great at quickly pressing buttons).
Level 1 needs a test of a longer string. You can make one that doesn't work for all cases by stringing together a multiple of 12 pairs of copy/delete. (abc requires a multiple of 4, ab requires a multiple of 3, so 12 is the least common factor. ) Adding an input of at least 4 Letters would require 60 pairs of copy/delete to work for all the cases, which can't be fit into the grid, forcing a 'proper' solution.