Ol' Slushination
So here's a goofy little thing, you don't have to actually let go of the chainsaw, you can just keep it revving up. It makes one hell of a Filth soup.
Ol' Chainsaw-i-cycle
Just punch the chainsaw with the knuckleblaster, nothing else really.

The Ol' I overcharged my phone and it inflated like a balloon and f***ing exploded
So if you charge up an enemy. they explode, killing other enemies nearby.
The Ol' I got your nose and now you live no moes
Use the whiplash to bring the enemy to you, or you to them, and just plug them 'em and watch them explode like the 4th of July.

The Ol' Slip and Slide
Simply walk forward a little while shooting out the gas, and you'll start going forward until you run out of gas.
The Ol' I sh** myself after having 97 bean burritos at the local Taco Bell
Shoot a little gas forward, set it on fire, and do the slip and slide again. It might hurt a little but so does taking a dump after eating Taco Bell.

The Ol' Orbital Cannon
I got this one from kharci on the discussion "The Alt Sucks", you just basically have to time the core and the jackhammer at the same time, and you'll be able to shoot farther than a foot ahead of you.
The Ol' Soldier Rocket Jump
The damage of the jackhammer increases with airtime, and if you hit an enemy while in the air you'll shoot backwards. And with 2 launches you can launch really high, and can probably go even further with more launches. However, 2 launches will cause the jackhammer to Overheat for a little while, but don't worry, if you dash midair it should stall long enough that you'll be able to use it again midair.