Good news: You've escaped along with some other aliens. Bad news: Humans want to spoil the party and you must stop them. Go forward to the huge cave with something smoking inside. You cannot climb local rocks, so you cannot avoid the cave.
Note: Beware of green plants. They deal damage when you come too close.
Inside follow the only path. Your allies will charge at humans and get themselves killed. Your goal is to kill humans all by yourself now.
Note: Synthets emit no pheromones, so they aren't highlighted with your regular vision nor they can be beheaded to restore your health or stunned using your tail. Treat them like walking and annoying turrets.
Be careful approaching humans or two turrets can kill you pretty fast. To avoid being spotted use the trench to the right.
Note: As soon as you come close to the element ahead, the green light will switch to red and countdown will start. Now you have but a few seconds to destroy the dynamite or the mission is over.
Kill all the enemies pretty fast. Easier said than done but once you succeed, follow the lights. Eventually you will come to a bridge. More alien drones will come to help you. Kill as many enemies as possible when they are distracted. Bad news are that now humans start the countdown while you are more far from them.
When you kill the second element and disarmed the second bomb, you can follow the way and find out that it's a dead end guarded by two turrets. Careful, they can spot and kill you! However, there is an alternative route. From the first place where explosives were set look around to find a cave and it will lead you straight to the next pack of explosives.
Look for a small pond nearby with a thick horizontal stone pillar across it. Reach that pillar and follow it to a corridor. It's really hard to see but you can notice it by smoke.
Follow the long twisted corridor until you come to a huge opening. Two humans ahead will most likely spot you, so don't waste time.
From there follow the path lit by vertical lamps. It will lead you to the third element which is trying to set the explosives. This part is a bit harder since there are two synthets at once and no tricks like trenches and caves. Luckily, a few drones will help you.
Continue walking down the lit path until you come to a cave. There is a turret at the entrance but you can destroy it since most likely you will appear in its blind spot. Another turret is to the right on a narrow ledge, but it's easy to miss and hard to be killed by it. Go into the cave and follow it to end the level.