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• FIGHT: Ship in Distress (HoL DLC - only; emergent mission)
• THINK: Scan Anomaly (HoL DLC- only; random mission)
• THINK: Fragile Salvage/Explosive Extraction (Found found in regular systems; random mission)
• THINK: Another Gate Open (HoL DLC only once Plot is complete; available at any time from certain OL sectors if freeplay start)
• BATTLE: Xenon Incursion (HoL DLC only; major unique mission leading from Ship in Distress missions above)

Ware shortage missions

You're asked to deliver a specific quantity of <ware> to a station, but this order won't appear in the Trade Window until the mission is accepted. The station in question will probably have a trade offer up for the same ware, but the mission will not complete unless you fulfil the mission's demand (this prevents you auto-completing the mission with a suitable trade that's already on it's way: you'll have to set up or cancel & re-set-up a new trade to fulfil the mission's requirements).

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If the existing and <mission> trade orders are for the same quantity of ware, it becomes trickier. In such cases, it's probably best to try to fill both orders to be sure. This is another good reason for having a network of Trade Agents so you can check for existing offers for the ware before accepting a mission (you may gain rep but lose cash by accepting & completing a bad deal). At least the trade offer missions don't currently expire (they're not time-limited), but you'll likely lose profits by not fulfilling their /complete/ requirements ASAP.

Station Defence missions

Hostile S+M ships tend to arrive via highways or super highways, whilst L and XL targets boost in. All hostiles are hell-bent on attacking the station so best arrive ASAP or you risk missing the action. In Rebirth v3.61, you don't need to participate in fight (...) as stations are capable of defending themselves and you will receive the reward regardless. This is addressed in v4.00 though through the separation of the reward into a payment plus a participation bonus.

Patrol Missions

This is quite similar to a chain of station defence missions in that you'll visit multiple zones and the various hostiles that may appear need killing. As with  station defence missions, you don't need to participate in fights in Rebirth v3.61 in order to get paid.  Similarly, this This is addressed in v4.00 though through the separation of the reward into a payment plus a participation bonus.

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• The abandoned ships have the same ping colour as asteroids  so it is easiest to find them in zones without rocks.
• The mission marker disappears at the 50km mark. If you order a ship to your location and select it, you can use it's distance to help you move forward