Amazing game...
but after I cleared the ice world with the first, main guy... nothing. Nothing happened, I beat the boss, a portal appeared, I got the ice icon, bound to '1', and I could shoot ice arrows and everything... but uh... couldn't get through the portal? It was probably something obvious, but I tried down, up, attack, shooting/hitting it with ice, etc.... and nothing worked :-(
Awesome game though, I hope I can use it without getting stuck next time