this is a step up in difficulty to my previous maps, and uses 3 custom blocks/items ( item.exchange/item/view/23856
item.exchange/item/view/33193
https://item.exchange/item/view/33192 ), and the time can probably be shaven down to 2:30 by someone a better than me. certainly not one of my best works, looking at it now that I've gotten better at mappng.