Starcraft – How many Banelings do I need to wipe different structures

The campaign lists 26 total missions, though some of these are "A or B" missions. Though you may only complete one of these missions for credits / research / campaign credit, the other, alternate mission is available on the console on the bridge to be replayed any time you like for achievements, etc.

Given the nature of those "pick one" missions, I believe there are 29 total possible missions +- a bonus mission that is only unlocked during special circumstances. (Or there may be 26 missions +- the bonus mission, I'm unsure how the "Campaign progress" bar, x/26, accounts for the branching scenarios.)

I feel partly responsible for this question so I'll try to get through it for you.

So there are three ways to use Banelings you probably haven't considered:

1. Spidermines
2. Baneling Drops
3. The Baneling Shield

The most common on is actually #3, but I'll go through them in that order.

The Baneling spider mine is very similar to what you're doing right now, and has the advantage of lacking any micro. Simply burrow your banelings (usually spread out in a line), and right click the 'Unburrow' to activate autocasting. These means the Banelings will rise up out of the ground whenever an enemy unit comes near them. Since Banelings deal damage on death, this is a very effective technique.

The next technique is the Baneling drop. This requires Overlord Transport and Speed to be effective. Load your Banelings into Overlords and as you engage the enemy drop the Banelings on top of them. Since Overlords have low priority and fly, they are less likely to die before delivering their cargo. You'll often see this in Professional Matches, as its very effective vs Terran Mech.

The final technique is the "bread and butter" of Banelings, the Baneling shield. Since Banelings explode to deal damage on death and are high priority, there is actually no reason to ever attack with them. Instead Move M next to or through the opposing force (usually Marine) and the AI will naturally attack the Banelings (if it has been given the Stop, Hold, or Attack Move commands). This will turn each of your Banelings into 30HP shields for your other units, will still having them serve their purpose. This is actually viable even without speed. Additionally, Banelings are neither light nor heavy, so no unit has the advantage against them.