Munchkin Legends Deluxe few questions

[Galaxio]

Sooo, my new Munchkin Legends Deluxe just came and before we start playing it I have few questions for just 3 cards, I understand all others since I went through all deck.

1. Vanished Into Legend - Can this be used for winning game (from lvl 9 to 10 or 8 to 10 if mons give 2 levels), after I read it again looks like it discards all monsters?! We draw just 2 treasures or all treasure we get from that battle +2 bonus treasures from Vanished Into Legend card?

2. Jumpin' Gemini - This can be used for winning level I'm like 99% sure?

3. Standing Stones - Can this be used for a winning level? If I use it on monster I need to fight when I kicked door on my turn so my other friend needs to fight it but he is going to win if he beats it, card says if that's only mons he is fighting against he automatically wins it and gains levels and treasures or not, or he needs to have more combat bonus then monster level to win it fair?

4. Curse! Viking Duck - Player who got hit by that curse can choose cards from hand he will give to others or can't choose?

5. Hireling - When we discard Hireling to escape from monster do we get treasures from that monster and level, also can we get a winning level with Hireling?