Buy Stuff
You’re able to buy turrets, healing stations, accelerators, and super minions all around the battlefield with your shards. Make use of this. There’s no point in hoarding shards, you can’t take them with you.
Set up Automatic Turrets where ever you see them as these will provide good defenses. Especially around your Sentry Bots, set those up immediately. While the enemy hasn’t managed to break through your lines yet, they might, and it’s better to be prepared if they do.
Accelerators will grant speed boosts to minions, so that’s their real benefit in Incursion. Get your minions across the field faster because the sooner they make it somewhere, the more you advance. Who cares if your teammates are sped up, am I right?
Healing Stations are a blessing after a fire fight. If you don’t want to have to teleport back to your base, you’ll be grateful to have a healing station right nearby that you can just stand next to.
Super Minions are a great idea if you’re finding that your minions are getting wrecked too early. These take extra damage and will make your advancement far more effective as they have an increase in attack, too.