Steam Hook
This grappling hook has a slow reel in speed but in combination with the steam pack, will allow you to soar through open spaces as long as you can take advantage of the rope's tension for circular movement. It is also possible to hook onto the bottom of iron bars, this will allow you skate forwards, monorail style. Although it requires you to build a line of iron bars beforehand, it is not limited to open spaces.
Right-Click: Fires the hook, holding down right-click further reels you in.
Left-Click: Disconnects you from the hook
Boiler
A block which allows you to place the steam pack on it to charge it. Right-clicking the block with coal gives it fuel.
Steam Pack
Wear this on your back and use A and S keys to propel yourself sideways while you're using the steam hook.