Abilities Build
I've altered some of the text from the video describing Khaimera. To make it more correct on how to use him perfectly.
Khaimera is a high risk, high reward melee fighter and a powerful duelist. Possessed by the Spirit of a wild beast, Khaimera excels at ganking enemies and isolating prey. His feral instincts and thirst for battle makes him an absolute savage in skirmishes.
Focus on buying cards that increase your Physical Damage, Attack Speed, and Critical Strike Chance
When playing Khaimera, look for opportunities to get ahead in the early game. Spirit Regeneration is what makes Khaimera great at skirmishing, increasing his Health Regen every time you land a basic attack.
Unleash will tap into the power of the beast causing Khaimera to frenzy, granting him max attack speed for a short time. Using these together will increase your survivability and make you a powerful duelist.
Khamiera excells at ganking and isolating prey. When hunting, use Ambush to quickly close the gap or to keep your target from escaping.
Your ultimate Cull, will channel the full power of the beast, devastating your target and knocking enemies away, isolating your victim.
Summary (TLDR)
Pros: Excellect One vs One Fighter. Very Great Jungle Hero, Cool Design, Good at killing Minions, Awesome Abilities and an even better Passive Spirit Regeneration.
Cons: No escape ability, Little survive-ability.
Abilities upgrade priority
Q > E > LMB > R
Early Game
In the Beginning, Focus on killing Jungle minions and helping other heroes with their lanes while you wait for the jungle minions to respawn.
Mid Game
Continue to Roam the jungle some more along with destroying harvesters for more CP. Kill the minions in the lanes to get more XP and CP
Late Game
When powerful enough, Obtain the Prime Orb and give team the OP buff, and start pushing. Avoid and outmatched fights you encounter. and continue to gank enemies while they least expect it.
Jungling
Get the abilities Spirit Regeneration and Unleash.
And you should be able to solo Blue and Red Minions.
Laning
Attack the lanes when you are in the level 4-6 area,
Before fighting a hero, attack some minions to get your Health Regan going to last longer in the battle.
Back away if the situation becomes serious. if you have to, fight some minions to gain some health back and go back and fight.
Ganking
When it comes to Ganking, Use Ambush on the enemy to stun them and stop them in there tracks. then use Unleash to go beast mode.
About Myself
I'm level 30 and my highest level hero is Grux which is at level 6. I'm a jack-of-all-trades kind of players ranging from Rampage/Gideon/Iggy&Scorch/Grim/Riktor/Sparrow/TwinBlast/etc. Been playing since the first weekend of the Alpha.
@Keith Bailey, no Beastmaster's Key early game?
I'm just going by with what cards I have unfortunately, but I end up getting rid of my key after I set up my harvesters. But it works out.
@Keith Bailey, fair enough. My point was a bit different though. +50% damage to all the jungle minions sounds like a very convincing item for a jungler like Khaimera.
I was just expecting you gonna mention this item in your guide ;)