Update 1.1 is now live on Steam bringing the following additions and improvements to Dead Hand:
The Shredder miniboss

The Shredder is a medium hovercraft equipped with twin-mounted gatling guns and an advanced targeting system array, allowing it to effortlessly punch through heavy cover by sheer volume of accurate fire. This miniboss has a small chance of appearing on levels 4 to 6.
Practice and Custom Difficulty Modes
Dead Hand has two new difficulty modes, "Practice" and "Custom".

Practice Difficulty is a 3 level long game mode intended for players that find learning the ropes through repeated head-banging against the (not so) "Easy Difficulty" level a tad too grueling; and would prefer a less punishing environment for exploring the game mechanics. There's also a new achievement to be obtained when beating this mode.

Custom Difficulty allows you to adjust several aspects of the game difficulty to your preference, namely: Damage dealt and received, amount of enemies, starting supplies, and how long it takes for Hunter/Killers to spawn.
Line of Sight Indicator

Lastly, here's a small quality of life improvement. The mouse cursor now shows a text indicator when aiming at an enemy without Line of Sight.
It's still recommended to have a look at the GunCam before shooting, though, as this provides more information about the amount of cover an enemy has.
Have fun!