The Personal Order to kill 75 enemies using the Mortar Sentry in Helldivers 2 isn't hard thanks to the devastating explosions that take out enemies clusters easily. It makes the Mortar Sentry one of the best Stratagems in Helldivers 2 as long as you understand you're just as likely to get blown up as the enemy if you're not careful. To help you clear this order with as little collateral damage as possible, I've got some tips below on how to use the Helldivers 2 Mortar Sentry efficiently to kill 75 enemies fast.
How to get 75 kills with the Mortar Sentry in Helldivers 2
The Helldivers 2 Mortar Sentry fires volleys of three mortars, raining explosives down on enemies and any unlucky nearby players. It's also got great range and doesn't need a direct line of sight, making it a great defensive tool in Helldivers 2. However, because the mortars take time to fall, enemies can move out the way before the mortars hit or you and teammates can easily walk into the danger zone so you need to be careful.
If you've got to kill enemies with the Mortar Sentry in Helldivers 2 for a Personal Order, the easiest way to get this done quickly is to hop into any medium-difficulty Eradication mission. The Mortar Sentry's power means it's effective against both Helldivers 2 factions – the Terminids and the Automatons – but suffers for different reasons. The Terminids being fast and always moving means they can easily evade the mortars, while the Automatons are fewer in numbers and more resilient, so the challenge can take longer to complete.
Regardless of the faction, this should take around two or three Eradication missions to complete. Make sure you place the Mortar Sentry out of the way of enemies, preferably up high, and stay reasonably close to it to both protect it from enemies and you from it – playing these as Helldivers 2 solo missions will also limit the sentry's chances of exploding an ally too. I also recommend bringing along either Stun Grenades, the EMS Mortar Sentry Stratagem, or bot. That way, you can keep enemies in place, allowing your Mortar Sentry to clean up and not miss its targets, hopefully completing the challenge as quickly as possible to get 15 Medals.
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