Use the bugs' fear of explosions against them.
Anticipate friendly movement (walk behind, not in front)
LISTEN to your teammates. The Dwarves have many voice prompts and unique sound effects. Example: If the engie hears the scout shout "Lights up!", the engie should be checking the lit area for difficult to reach materials to platform.
Environmental hazards - electric crystals, slime, and so on - affect the bugs too.
Balance ammo consumption. Ammo drops give 50% to all, so swap weapons for maximum gain.
Know when to use the terrain scanner.
Kiting Praetorians 180 degrees is powerful and requires no ammo.
Driller class tips and tricks
Always consider drilling a tunnel if traversing up or down elevated areas even if it's not needed at the time. Your team may need to go back up in a hurry for example and it would be nice if a path has already been made. It's always a good idea to image what it's like going back, espacially when playing the Driller. That is one of the reasons he should be played when you have some experience with the game.
Don't use the flamethrower nonstop, it will drain it's fuel in vain. You can tell a good Driller from a bad one by how well they use the damage overtime. Be it against swarms or Praetorians.
During extraction it can be a very viable option to drill your way to the drop pod if the proper way can't be found. Usually at around 80 meters give or take is when you should consider doing it, but make sure your team knows about it as they would want to cover you.
It's often a good strategy to finish enemies using your pickaxe after setting them on fire, even though the Driller's pickaxe deals less melee damage the fire will cover for it.
Using the flamethrower together with a Scout's Inhibitor grenade will make very short work of enemies.
When drilling you should tap your mouse button instead of holding it, this makes it last longer before overheating.
Engineer class tips and tricks
When placing platforms on vertical veins for Scouts to use, try to have it land between the bottom and middle of the vein. That way the Scout can reach higher and still be able to mine the bottom, speeding up the mining.
Don't waste your platforms, you don't have many. If you can dig instead of making a wonky staircase, do that. Unless you're extracting, then there's no need to hold on to the platforms.
When you're told a swarm is coming, place the turrets in an open area if possible as it gives everyone more space to maneuver. It can still be viable to use tunnels as chokepoints but your team would often have to be more experienced. Remember that dead Praetorians release a cloud of damaging gas, wouldn't want a tunnel filled with it.
General tips for any class
Inspect the starting room well.
Toss those flares (they re-spawn quickly).
If you are the 4th player to join, pick the class the team is missing.
Pay attention to the number of flares on the ground and the color (says a lot about who is been there and for how long)
Pickaxes DO NOT deal friendly fire.
Tag Red Sugar as you see it if your teammates are wounded (a friendly subliminal reminder).
You can "grab" ledges. Tap your jump button. You can also press and hold jump.
Do not leave your scout behind while he/she gathers materials.
Any number of Dwarves can join in on a press and hold action (Two Dwarves can resuscitate a fallen player faster than one)
ANY Dwarf on the team can build the engie's turrets (though some might not want you to)
Look for the M.U.L.E before making it get up and move 3 feet.
Use your lazer pointer regularly (you might be the only one to see that resource the whole game)
Tap your lazer pointer regularly to keep track of the team's position.
Use your "shout" when you want the team's attention.
Check with your team before ordering a supply drop!
Turning off headlamp can make it easier to see the glow of, jadiz, eggs and so on.
Bugs fear explosions.
Gunner class tips and tricks
When placing satchel charges, check so there aren't any teammates next to them. This is the most common form of friendly fire. The same should be said to anyone else, if you hear someone say they're placing explosives, get out of the way.
Think before placing ziplines. Is there another way? Is it a better option like digging? See what your driller does if there is one, maybe he's going to create a tunnel instead. If it's just a short gap that's too far to jump, perhaps an Engineer will bridge it.
Try to keep atleast one zipline for when you extract, they often become very important and can make or break a mission.
Scout class tips and tricks
During extraction (when the drop pod has been called), use your grapple to go a little ahead of your team to try and show them which way to go or alert of dangers. Use your flaregun and place markers (control+left click) on the right paths, like a hard to spot tunnel dug by a driller which leads onwards. A wrong turn can quickly get everyone cornered and killed. Just be mindful not to stray too far from them however, you'll need a lot of situational awareness.
Also during extraction, your inhibitor grenade can be dropped at your feet to stop any swarms from following your team.
The Scout and Engineer has a symbionic relationship, he places a platform under an ore vein, and the Scout grapples onto it for instant access. Both players of these classes should always be aware of this strategy. If either class marks a vein, look at it. They may want a platform or a Scout to go on it.
Using the Inhibitor grenade together with a Driller's flamethrower will make very short work of enemies.
When using the flaregun try to place the flare as centered in the chamber as possible, like on the large crystals if they're present. Just remember it has bullet drop.
Use the grapple as a movement extension. Dodge enemies and explore difficult terrain. Just be mindful to grapple above something to land on else you will fall and may take damage. Should you mess up you can always grapple back.
The grapple allows you to quickly reach downed teammates and get them back up again.
Nitra often spawns quite protruded from the rockface, meaning it becomes it's own platform to stand on.
Strategy Tips
1: Inspect the starting room well.
2: Toss those flares (they respawn quickly).
3: If you are the 4th player to join, pick the class the team is missing.
4: Pay attention to the number of flares on the ground and the color (says a lot about who's been there and for how long).
5: Pickaxes DO NOT deal friendly fire.
6: Tag Red Sugar as you see it if your teammates are wounded (a friendly subliminal reminder).
7: You can "grab" ledges. Tap your jump button. You can also press and hold jump.
8: Don't leave your scout behind while he/she gathers materials.
9: Any number of Dwarves can join in on a press and hold action (2 Dwarves can resuscitate a fallen player faster than one).
10: ANY Dwarf on the team can build the engie's turrets (though some might not want you to).
11: Look for the M.U.L.E before making it get up and move 3 feet.
12: Use your lazer pointer regularly (you might be the only one to see that resource the whole game).
13: Tap your lazer pointer regularly to keep track of the team's position.
14: Use your "shout" when you want the team's attention.
15: Check with your team before ordering a supply drop!
16: Turning off headlamp can make it easier to see the glow of, jadiz, eggs and so on.
17: Bugs fear explosions.
18: Use the bugs' fear of explosions against them.
19: Anticipate friendly movement (walk behind, not in front).
20: LISTEN to your teammates. The Dwarves have many voice prompts and unique sound effects. Example: If the engie hears the scout shout "Lights up!", the engie should be checking the lit area for difficult to reach materials to platform.
21: Environmental hazards - electric crystals, slime, and so on - affect the bugs too.
22: Balance ammo consumption. Ammo drops give 50% to all, so swap weapons for maximum gain.
23: Know when to use the terrain scanner.
24: Kiting Praetorians 180 degrees is powerful and requires no ammo.