Gyrocopter

Rocket Barrage does tons of damage when an opponent is isolated.

Gyro has great waveclear early on. Push out waves from level 5 onwards and start farming nearby camps.

Ask your teammates to stack for you as you can clear stacks easily once you max out Flak Cannon.

'Hit count' objects like Supernova can be removed with ease by attacking them and flakking other heroes down.

Make sure to get Aghanims Scepter as soon as possible as it improves farming speed and DPS in fights.

Side Gunner can attack even when Gyrocopter is stunned and all attack modifiers work as well.

In teamfights, focus on hitting most of the opponents with Flak Cannon and Call Down.

If in desperate position, consider purchasing Divine Rapier as last resort. Works well with Flak Cannon.

Rocket Barrage does a lot of damage. Keep distance from Gyrocopter or share damage with allied units.

Help destroying Homing Missile that is aimed at your team mate.

Gyrocopter farms quickly with Flak Cannon. Smoke on him, place deep wards and block off camps with sentries.

Gyrocopter does a lot of magical damage and joins fights early. Magic resistance items are great.

Crimson Guard, Heaven's Halberd and armor items are great against Gyrocopter's Flak Cannon.

It is easy to reflect Homing Missile back to Gyrocopter with Lotus Orb.