Helldivers Objective - Escort Convoy (Bugs)
2With Bugs, these are toughest on Snow or Forest maps where you can have restricted mobility during all or parts of it. The good news is the rail track itself is always restriction free.
The main enemy threats to the Convoy are the Behemoths and Impalers because if they get close enough to touch and stop it, it is very hard to take them out without also taking out the Convoy. The Impalers off screen can also put up their deadly tentacles and if they manage to stop, if you don't shoot them to borrow fast enough they will easily take out the Convoy within a very short time.
Any of the enemies that get up close to the Convoy can stop it from moving and clearing them out without damaging the Convoy with friendly fire can be tricky requiring carefully angled shots while the Bugs continue to hold and damage it.
Some options like the FLAM-40 'Incinerator' and TOX-13 'Avenger' can clear enemies off the Convoy without damaging it.
Slow / Stun options and in particular the RX-1 Rail Gun or Stun Grenades Perk can often be the thing that saves the situation by slowing / stunning / stopping even the biggest enemies and buying the time Convoy needs to get away or for team to dispatch enemies safely.
While engaging in battle, don't let Convoy get too far ahead or behind off-screen or it will fail automatically if not by coming under fire by other enemies. Practice good formation and try to keep all the enemies / fighting in your rear.