TrenchLine:Tower Defense Enemies and Counters

Know the wave before it knows you

TrenchLine:Tower Defense escalates from shambling zombies into armor, air, naval horrors, and named threats like the Sand Worm and Barnacle Behemoth. This guide groups enemy types, explains why leaks happen, and maps counters to troops from the roster. Pair with Troops, the Troop Tier List, and mode guides like Hardcore Tidefall.

If you only upgrade “whatever is closest,” armored columns and flyers will punish you on schedule.

Shamblers

The teaching enemy. Slow, numerous, perfect for learning road coverage. Counters: any early DPS—Riflemen, Conscripts, Assault Squad, MG. Failure mode is not shamblers themselves—it is spending your entire economy identity on overkill pads and arriving broke for later armor.

Tip: Use shambler waves to finish placements and Farms, not to max a single vanity Spec Ops tile.

Runners

Faster pressure that tests whether your entry road actually has overlapping cones. Counters: same early infantry and MG lines, preferably upgraded enough that they do not tunnel to the exit. Mortars help when runners clump.

Tip: If runners consistently leak a corner, you have a coverage hole—not an RNG problem.

Armored enemies

Armored units reduce the value of unupgraded small arms. Counters:

• PKM focus (community favorite into armor)
• SPG-9 cones on packs
• Tanks / Battle Tank breakthrough
• Conscripts once AP investment is maxed

Rifle-only Easy habits die here. Rebuild spend the moment armor tags appear.

Brutes

Heavy hitters that demand respect. Treat them as armor-plus: they punish thin MG lines and reward prepared PKM/SPG-9/tank packages. Call Brute spawns in chat on public servers so the armor lead upgrades in time.

Tip: Do not sell all Farms the instant a Brute appears—income still funds the rest of the match.

Flyers

Air threats that ignore your beautiful road wall. Counters:

• Shilka
• MANPADS Team
• Gunships as flex support

Ground rifles are not a plan. Flood maps and Hardcore Tidefall often overlap flyers with naval pressure—see Flood Event.

Drowned

Flood-flavored threats tied to water narratives. Counters emphasize harbor DPS plus shore cleanup. If your boats are down and your shore is empty, Drowned-style pressure turns into mysterious leaks. Keep water tiles alive.

Depth Chargers

Underwater / channel pressure that punishes dirt-only attention. Counters:

• Upgraded boats and Rocket Barge
• A player assigned to harbor calling
• Refusing to strip naval upgrades for every land emergency

Depth Chargers are why Flood loadouts reserve a naval slot even when chat only memes Battle Tanks.

Sand Worm

A named high-threat encounter that stresses focused DPS and lane discipline. Counters are less about one magic troop and more about:

• Concentrated upgraded tiles on the worm’s path
• Armor-break tools ready
• Not scattering upgrades across irrelevant decorative pads
• Keeping economy alive so you can repair after the spike

Watch the path, pre-upgrade, and avoid wave-skipping mid-adjust.

Barnacle Behemoth (Hardcore wave 40)

The Hardcore Tidefall Beach finale boss. Expect a damage-soak plus adds style problem on wave 40, stacked on top of landing craft and sea horde fatigue. Counters and prep:

• Pre-upgraded shore and harbor DPS
• AA still online for overlapping flyers
• Naval Tokens converted into Fleet Command value (Hardcore-only tokens as of v0.25.0)
• Armor cones (SPG-9) and PKM/tank focus on the boss path
• Repair critical pads before the final window

Full run structure: Hardcore Tidefall.

Landing craft and sea hordes

Not single enemy species so much as delivery systems. Landing craft beach packed threats; sea hordes stress channel DPS. Counters are systemic:

• Boats/barges upgraded before craft volume spikes
• Shore MG/PKM ready for unload
• AA ready if flyers coincide
• Role split so five players are not all decorating one pier

Counter matrix

Enemy / pressure	Primary counters	Avoid
Shamblers	Assault Squad, Riflemen, MG	Overspending
Runners	Overlapping entry DPS, mortars	Single thin corner
Armored	PKM, SPG-9, tanks, AP Conscripts	Level-1 rifles
Brutes	PKM/SPG-9/tank focus	Panic-selling Farms
Flyers	Shilka, MANPADS, gunship flex	Ground-only cope
Drowned	Harbor + shore	Ignoring water
Depth Chargers	Boats, Rocket Barge, harbor lead	Dirt-only upgrades
Sand Worm	Focused upgraded path DPS	Scattered pads
Barnacle Behemoth	Prepped AA/naval/armor + tokens	Entering undergeared
Landing craft / sea horde	Barge + shore + timing	Late harbor builds

Difficulty scaling

Easy teaches shamblers/runners with light armor lessons. Medium tightens timing. Hard expects armor and AA answers on schedule. Endless tests whether your economy and repair habits survive fatigue. Hardcore (Tidefall) examines naval, tokens, and Behemoth prep.

Vote difficulty with How to Play etiquette—underleveled Hardcore teaches tilt, not counters.

Mid-match identification habits

1. Glance at upcoming tags or visual silhouettes early.
2. Call “armor,” “air,” or “water” in chat.
3. Upgrade the matching role lead’s tiles first.
4. Keep Farms unless the wipe is otherwise guaranteed.
5. Review leaks after the match and adjust Best Loadouts.

Related pages

• Troop explainers: Troops
• Ranks: Tier List Troops
• Water threats context: Flood Event
• Final boss run: Hardcore Tidefall
• Hub: Players Hub

Enemies are the exam questions. Troops are the answers. Bring both books into the match.