Tech Reactor Orbital Strike Orbital Strike just does not provide the same returns when compared to being able to efficiently turn every single building you own into 2. Two BC's Two Marauders Two Firebats Two Ghosts Two Goliaths Two Vultures etc. Versus 4 Marines 2 Medic dropping in anywhere on the map 0.o Zerg Research Obtained.
I'm at the last mission. I have a hard time doing it. When the artifact is at 45% my base is already overwhelmed by the zerg. I previously went with the Nydus Worms route. So no Nydus Worms in my mission. I keep training marines and medics but it's so hard. The zerg is attacking the base with flyers from behind also.
Things I've researched so far:
Protoss:
Vanadium Plating
Orbital Depots
Command Center Reactor
Raven
Orbital Strike
Zerg:
Fortified Bunker
Perdition Turrets
Hercules
Regenerative Bio-Steel
Psi Disrupter
Sc2 Tech Reactor Or Orbital Strike Pro
My tech upgrades are more centered on bio and vehicles than air. The only thing I've upgraded for the air is Missile Pods for Battlecruisers. I have all mercenaries except Dusk Wings and Spectres instead of Ghosts.
Need some tips.