I am posting this message to share my experience on this event. I've of course tried it, and the outcome of this is a big disappointment with a feeling of having wasted saphyr and rubies (500) for nothing. With buffer and my BP of 3.4M, i could not clean floor 1. Here are my comments: 1. no description on BP required has been provided Players will all think like me that they can at least past floor 1. It is already months i have been playing this game, and even with my rating, I fail badly. 2. Refresh for the buffer Why on earth did u put 20000 seconds for a refresh? Of course, players won't wait and use rubies... I've killed 5 bosses, meaning spending 500 saphyrs until i realized the level of boss valliant knight is far too hard. Of course, there was this initiative to grant buffers but there is a timer for refresh that is far too long...so i used rubies to speed it up. It firstly cost 5 rubies, then 10, then 20 then 30 then 50...Was thinking okay maybe i can pass it with the buffers, but not even...Shall i consider that this event is just a trap for making players spending rubies for nothing...I'm not an heavy spender and get rubies from time to time, but here, i've just as wasted 500 rubies for NOTHING. I guess u can understand i'm pissed. No idea if u guys have experienced the same thing. I do not even hope i'll get something back from it.