EPTFor those who haven't seen it, there are mastery achievements for each mission of Pack 2. These are not part of the standard 3 achievements per map.
Anyways, I wanted to open a new thread because the first mastery achievement is perhaps the hardest achievement in all the SC2 campaigns. All-In in Brutal took me longer, but I was pretty bad at the time.
First mastery : Don't let the Protoss mothership power up. Ever
On this mission, you are on a clock. It's incredible to be so pressured, I loved it. I only managed to complete it with a tons of reloads. I start by taking down all 6 hatcheries without losing any banshees. I use the nuke to kill an already rooted spore crawler on the topright hatchery. Then I went goliaths/marines and spamming nukes. Nova tanks most of the hits thanks to her super stim. I mostly manage to kill the protoss special building at 99%. Having a scan available for the very last shield is quite useful because the ramp prevents you from nuking easily
Second mastery : Don't prevent Zerg units from spawning
Pretty easy. Just use Nova, and a lot of nukes. You can stay on one base with tanks/liberators/marines. I don't even get a single unit out of my base apart from Nova
Third mastery : Don't kill any Protoss units
A bit difficult. By the time the protoss send 2 zealots and 2 stalker to your base, which you shouldn't attack, you need to have your second base completely up and running and at least 150 population. I went liberators/marines, it's pretty straightforward
