Thanks for the feedback :D
The game did break at level 4, there was one more level and then an end screen, not sure why it happened, others seemed to easily proceed to the next level. Maybe you can try the downloadable version as the web version might not work properly sometimes. The last level (which didn't load during the stream) has the die-to-respawn mechanic from the cage level as its solution so it was important to introduce it (though I admit I added the 'R to Respawn' message to throw off some players so it was a little unfair). Sorry for the late reply, I am glad you liked the game :)