Beastmaster

If laning against Chen, Enchantress or Crystal Maiden, consider not summoning Boars as they deal with summons easily.

Make sure not to feed boars to opponents. Deny them or move them away when they're low on hp.

Keep the hawk out to always have a form of lockdown on enemy heroes close to you.

Utilize Beasmaster's high base damage and additional damage from boars to deny creeps and secure last hits.

Make use of catapult waves to pressure the tower along with your summons.

The biggest early powerspike on Beastmaster is Veil of Discord and level 6 timing. Look to score a kill and take tower down.

You can farm aggressively since you have hawk's root to protect you and summons to farm those camps safely.

Push out sidelanes with summons, especially if you control Helm of the Overlord creep, Black Dragon ideally.

Take first Roshan between 15 and 20 minute mark.

Beastmaster's boars give a lot of gold and experience. Look to kill them.

Be aware of Beastmaster's level 6 and Helm of the Dominator powerspike if he is not going for Veil of Discord.

Defend towers against Beastmaster. Otherwise he will invade your jungle after taking towers.

Gank Beastmaster with smoke as you get more gold if you kill his summons too.

Consider buying a Crimson Guard and armor items against Beastmaster.

Lotus Orb and Linken's Sphere are good at countering Beastmaster's Primal Roar.

Beastmaster lineups are good at taking early Roshan. Ward around Roshpit and check.

Avoid walking up to Beastmaster on your own as you might get rooted by hawks and then roared to your death.