1. If you use the medal to unlock the next challenger, do you keep the previous challenger, or does the new challenger replace it?

2. I just got the first medal and I'm not sure whether or not to use it. The 2nd hydra sounds beatable for me but I'm not sure. Here are my pet's stats:

Level: 394 Strength: 980 Defense: 980 Health: 980/980 Speed: 503

He has a Holy Deluge scroll, and his set is reborn icewand of doom, forj tempered shield, malerias clawed glove, soma tablets, gate keeper collar of slavery. I have a bunch of potions/pylonics equipped as well.

Will I be able to beat the next hydra? Any advice/tips would also be appreciated. Thanks!

1. You keep every challenger
2. You can definitely beat the next two hydras

Here are some topics pertaining to the third hydra (five headed) if you need weapon/scroll ideas: T6 - trying to beat this hydra Tire 5 vs 5-headed hydra? 5-headed hydra, tier 7 pet - I did it! I beat the third hydra with all of my T6s and it wasn't too difficult. You can certainly do it with your pet's stats.