1)If you have an ally and 1 of you is terran and other is zerg, try to get infested terrans fast. They have a very strong damage and cost only 100min and 50gas (dropping them at workers will cause some nice damage ;])
2)always try to hallucinate and bring those guys in 1st (note:carriers which are hallucianted can't shoot intereceptors)
3)if you find that the enemy is going to tank you up, use queens to broodling them
4)to find cloak w/out using detectors use mealstorm or ensnare, also if you parasite, the unit cant cloak anymore
5)if there are too many units, status field half
6)difilers may seem dumb to some, but they are helpful research ALL of their things and use them
7)always use templars against zerg
8)medics and hydras are a good combo take advantage w/ your partner
9)always nuke on air units (it takes away the red dot so they won't know)
10)if enemy is pinning in, use upgraded speed zeos and run right through (distraction advised)
11)take out enemies town hall early in the game and you will cripple them good (if cant workers will also cause some damage)
12)mind control is a great spell, take advantage (mind control critters and bring them to enemy base or get another species of your own!~)
12)mealstorm is like lockdown but it spreads, use it!
13)always have tons of workers
14)if you get detectors fast you can cripple an enemy if they try to cloak rush you (they spend all their money on pointless cloak units)
15)find weak points around his/her's base and drop there
16)dont keep going for the same unit, mix around
this is all for now, MORE COMING SOON!...