This is just a project that I've been working on for years at this point.
From the beginning, I've always loved the prospect of actual helicopters in SimplePlanes but never found a simple enough design that I could modify until I came across the original chopper and made it my own.
This attack helicopter is really a flying tank equipped with

16 modified Cleavers as ATGM's
4 Interceptors for self-defense
and a chin-mounted 30mm autocannon with 1500 rounds of ammo

It does have a bit of an odd control scheme however with

Activation Group-1: Starting the rotors with Trim controlling rotor Pitch
Activation Group-2: Disabling the Pitch and Roll inputs for the main rotor
Activation Group-3: Activates the auto-hover system by @FairFireFight
Activation Group-4: Enables the turret and ball sensor array on the nose of the chopper with Pitch and Roll for the controls (mouse as joystick on PC)
Activation Group-5: Activates a hidden Blasto BFE300 to provide extra speed as this thing is pretty slow with a top speed of around 600 mph when at full throttle
Activation Group-6: Is the master arm for the ATGM's
Activation Group-7: Turns on the searchlight mounted to the turret
Activation Group-8: Disables the elevator at the rear if you have any reason to but you will need to if you intend to fly this like a plane