Here are the Items/Mobs in the 1.0 :

The Umbrella (make you fall slower and jumper higher) :

The Slasher (nobody knows where it from) :

The Chyx Ore (the most epic thing in this mod fr) :

The Kakapos (they're so cute, aren't they?) :

The Land mines (before) :

and after (not a big explosion but enough to make the mobs scared) :

The Diving Suit (once the full armor made, you'll be able to breath under water) :

The JETPACK (everbody knows what a Jetpack is) :

The Chyx Armor I (Night vision + Speed) :

The First Boss 'Cryostos' (if you beat him, you'll get his soul and his weapon, it's needed to upgrade your Chyx Armor I) :

The Chyx Armor II (Night Vision + Speed + Breath under water) :

And some Cave Block : 

It's not all, there's a lot of thing to discover, but that was the coolest thing.