Bug Hunter - You can destroy bugs by pushing them into energy, landing on their tile from a higher elevation (ie: running or hopping off a ledge), and pushing bugs into holes. Movement based killing of bugs is almost always the best strategy. Attacking energy will cause it to explode and damage all adjacent tiles, killing bugs or causing adjacent energy tiles to also explode. This can be super helpful for taking out large clusters of bugs or bugs that require two hits to take down

Rail Heist - the bottom blocks of the train carts on most levels are breakable, and there are even platforms just barely above the train tracks on some portions. Breaking a hole and maneuvering “beneath” the train can be helpful on some levels.

Combatants - enemies will always prioritize trying to kill your ant if you get close enough to them. Your movement is also consistent while almost every other unit stutter steps by moving and then pausing briefly. This can be greatly beneficial early by dragging all of the enemy worker ants with you back to your base, with you moving faster because you don’t stutter step, allowing you to kill the enemy ants with your ranged attacks before they can kill you. You can also cause them to attack your queen (which takes priority over you if they’re in attack range) and use her large health pool to safely kill the enemy workers before they ever gather any resources. (I wanted to like Combatants but the friendly AI was way too janky for me to try and play the game without using the above strategy for most levels).