PUBG Studios have released the first full gameplay trailer for Project ARC, embedded below.

Some detail about some of the characters is also being drip fed to us, so far, we know the following:

Apex

Main weapon: MP5K
Main gadget: Blue Zone Grenade

Buddy

Main weapon: AWM
Main gadget: Scanning Drones

Collision

Main weapon: Winchester 1300
Main gadget: Booby Trap

Dropdown

Main weapon: M4A1
Main gadget: Grenade Launcher that shoots sticky Toxic Gas grenades

Heinz

Main weapon: Desert Eagle
Main gadget: Drill Camera