As well as Hardest level you've played? this topic is inspired by Safety. I did it So what's the hardest level you've won?
Good job on safety there! You beat it on Lunatic or Very Lunatic? I too beat Safety and it's sequel mainly because I made the darn things, but if my own levels don't count then Xeia.
I also beat Safety! And the sequal! Possible my best achiments, but I cheat past one part. So maybe that doesn't count. But other hard levels, well... I have beat alot of Lunatic levels, Safety levels are prolly hardest. oh, I just beat industrial trap, very hard level.