Legion TD 2 Beginner’s Guide: Units, Waves and Co-op Strategy

Legion TD 2 is the deepest co-op tower defense on Steam, and almost nobody outside its community is writing about it. Evolved from one of the most popular Warcraft III custom maps ever made, this standalone sequel from AutoAttack Games quietly maintains a steady playerbase—averaging over 800 concurrent players in early 2026—and holds 87% positive reviews across more than 6,000 ratings [1]. New players searching for structured guidance find Steam Community posts and wiki fragments, but no single resource that explains every system from scratch.

This guide fills that gap. It covers the lane-and-king structure, the income system that separates LTD2 from every other tower defense, all seven unit archetypes across nine legions, wave-reading fundamentals, and co-op coordination. Whether you’re picking up Legion TD 2 for the first time or grinding through early ranked placements, start here. Future spoke guides on this site will go deeper into individual legions, advanced send timing, and ranked meta.

Quick Start: Your First Match Checklist

1. Pick a legion—Element or Forsaken are the most forgiving for beginners.
2. Build one cheap tank and one ranged unit in wave 1. Spend leftover gold on a worker.
3. Press F10 before each build phase to see incoming enemy types and plan counters.
4. Send a mercenary every wave starting wave 2—even a small one builds your income permanently.
5. Watch the fighter value bar—stay within 10% of the recommended value.
6. Tanks in front, damage dealers behind—always.
7. Tell your partner your send plan—“sending wave 4” takes two seconds and wins games.
8. Survive first, optimise later—clearing waves matters more than maximising income in your first 10 games.

What Is Legion TD 2

Legion TD started as a Warcraft III custom map that became one of the most-played mods in the game’s history. AutoAttack Games rebuilt it from scratch as a standalone title, launching into Steam Early Access in November 2017 and reaching full release in October 2021 [1]. The core format survived the transition intact: each player defends their own lane while simultaneously attacking opponents through an income-and-send system. The standalone version adds ranked matchmaking, nine distinct legions with over 100 fighters, monthly esports tournaments with $750 prize pools, and a cosmetic-only business model with zero pay-to-win mechanics.

Matches run 2v2 (the primary ranked mode), 4v4, or 1v1, with games lasting roughly 20 minutes. Each match plays through up to 21 waves of increasingly dangerous enemies. Your fighters defend automatically once the battle phase starts—your entire job is building, positioning, sending mercenaries, and managing your economy during the build phase [2].

If you enjoy strategy games that reward planning over reflexes, Legion TD 2 sits in a category with the best tower defense games on PC—but its PvP income layer gives it strategic depth that most tower defense games never approach.

Core Mechanics: Lanes, Waves and Your King

Every player controls a single lane. Enemy waves spawn at one end and march toward your fighters. If your fighters kill every enemy before they reach the end, you “clear” the wave and earn maximum gold. If enemies survive and pass through, you “leak”—you earn less gold, your opponents gain bonus gold, and leaked units damage your team’s shared king [2].

Each of the 21 waves brings stronger enemies with different attack and defense types. The same enemies appear in the same order every game, which means experienced players memorise the wave table and build to counter specific rounds [5]. Press F10 in-game to see what’s coming next—this is the single most important keybind for any beginner.

Gold funds two things: fighters (your defense) and workers (your economy). Workers cost 50 gold each and generate 1 mythium every 10 seconds [2]. Mythium is the secondary resource you spend to send mercenaries at opponents or upgrade your king. The tension between spending gold on fighters and spending it on workers defines every decision in the game.

The Income System: Why Sending Wins Games

Income is the mechanic that separates Legion TD 2 from standard tower defense. At the end of every battle phase, you receive gold equal to your income value. Your income increases immediately and permanently whenever you spend mythium—on mercenaries or king upgrades [3].

Here is why this matters: a player who sends a small mercenary every wave from wave 2 onward compounds their income advantage across 19 remaining rounds. A player who hoards mythium for a single massive send on wave 10 has zero income growth from waves 2 through 9. Even if that big send breaks the opponent, the economic cost of delayed sending is severe [7]. In practice, consistent small sends almost always outperform long saves in the early game.

Mercenaries come in two categories. Income mercenaries are cheap, provide maximum income per mythium spent, and add moderate offensive pressure. Power mercenaries provide less income but have abilities that can crack specific defenses [5]. Beginners should default to income mercenaries—the compound economic returns matter far more than flashy plays at lower Elo.

When to send vs. when to save:

• Default: send income mercs every wave. This is the safe baseline that builds your late-game economy.
• Save for 2–3 waves when you spot the opponent is underbuilt (check their fighter value bar) and a coordinated push with your partner can break them.
• Buy king upgrades when you’re confident you cannot break your opponent’s defense and need to outlast them instead.
• Never save more than 3 waves in early game (waves 1–10)—the lost compound income is not worth it [7].

Unit Roles and the Type Triangle

The game manual defines seven fighter archetypes, and understanding them prevents the most common beginner mistake: building all damage with no frontline [5].

Attack and defense types add a second layer. Damage multipliers range from 75% (weak matchup) to 125% (strong matchup), creating a rock-paper-scissors counter system you can view in-game by pressing F11 [5]. Building every fighter with the same attack type leaves you exposed on waves where enemies resist it—always diversify your damage types [2].

Best Beginner Picks by Legion

Legion TD 2’s nine legions each offer roughly five fighters at costs ranging from 10 to 200 gold [4]. Trying to learn every unit at once is a guaranteed way to lose your first 20 games. Instead, pick one legion, master the two-fighter pair from the table below, and build outward from there.

What about Mastermind? Mastermind is a special mode—required in ranked play—where you draft fighters from all legions instead of choosing one. It’s powerful but overwhelming for new players. Learn individual legion strengths in Classic mode for your first 20 games, then transition to Mastermind once you understand type matchups intuitively [5].

Reading Waves: When to Spend and When to Hold

The wave table is fixed every game, but enemy types rotate between melee, ranged, armoured and boss units across all 21 rounds. Memorising the full table takes time—using the F10 wave info screen before each build phase takes one second [2].

Wave patterns every beginner should know:

• Waves 1–4: basic melee enemies. Low HP, simple attack patterns. Cheap tanks handle these with minimal gold. Push workers aggressively with your surplus.
• Wave 5: first mini-boss. Significant HP spike. You need real damage output by now or you leak. This is the first checkpoint where underbuilding punishes you hard.
• Waves 6–9: mixed types appear. Check F10 before each wave. Ranged enemies threaten your backline DPS—consider adding a second tank or repositioning. Type matchups start mattering here.
• Wave 10: boss wave. High HP, specific resistances. Stack your strongest DPS and check which attack type the boss is weak to via the F11 type chart.
• Waves 11–15: diversity spike. Single-type builds collapse here. If you’ve built only pierce damage, you’ll hit waves that resist it hard. This is where pre-game type diversification pays off.
• Waves 16–21: income dominance. Players who sent consistently in early waves can afford top-tier fighters. Games rarely reach wave 21—most end between waves 15 and 20.
• Legion TD 2 Tier List 2026: The 3 Builds Dominating Ranked Play Right Now
• The 4 Legion TD 2 Fighters That Give Beginners the Highest Win Rate in 2026

The core rule: one fighter strong against the current wave’s defense type is worth three fighters dealing neutral damage. F10 tells you what’s coming; F11 tells you what counters it. Use both every round [5].

Co-op Coordination: Sends, Gaps and Communication

In 2v2, you share a king with your partner. Both lanes feed into the same health pool, which means one player leaking costs both players gold and king HP. Coordination separates losing streaks from climbing [7].

1. Synchronise your sends. Two small sends hitting the same wave are significantly more effective than two sends spread across separate waves. A simple “sending wave 4” call before the build phase ends is enough. Saving together or sending together almost always beats splitting your pressure [7]. If you enjoy this kind of communication-heavy co-op gameplay, you’ll likely also connect with the best co-op survival games on PC.

2. Cover each other’s type gaps. If your partner is running all-pierce damage, build magic or impact attackers on your side. Check their lane during the build phase—two lanes sharing the same weakness get punished on the same waves simultaneously.

3. Call out when you’re weak. If a boss wave is approaching and you’re underbuilt, say so. Your partner can either send heavy to pressure opponents (forcing them to also underperform on the boss) or hold sends so you can catch up economically. Silence is the real enemy in 2v2.

Your First 20 Games: A Ranked Progression Path

Games 1–5: Classic mode only. Classic matches feature relaxed matchmaking and provide bonus income to lower-rated players, reducing the penalty for early mistakes [5]. Pick one legion (Element or Forsaken), build the two-fighter pair from the table above, and focus on clearing waves. Ignore income optimisation—survival comes first.

Games 6–10: start sending every wave. Even the cheapest income mercenary each round. Watch how your income number grows compared to games where you saved. Make pressing F10 a reflex before every build phase.

Games 11–15: try Mastermind in Classic. Draft fighters you already know from your main legion first, then experiment with one unfamiliar unit per game. This eases the Mastermind transition without overwhelming you.

Games 16–20: enter ranked. Ranked uses Mastermind exclusively. Early-rank matchmaking is forgiving—you’ll face players near your skill level. Focus on two fundamentals: consistent income sends every wave and staying within 10% of the recommended fighter value bar [7].

Planning and economic thinking carry across strategy genres. If the resource management layer of LTD2 clicks for you, the best city builders on PC reward the same kind of systems-level decision-making.

Frequently Asked Questions

Is Legion TD 2 free to play?

No. It is a paid title on Steam, typically around $20 USD at full price and frequently discounted during sales. All gameplay content is included—microtransactions are limited to cosmetic skins and emotes with zero competitive advantage [1].

Can you play Legion TD 2 solo?

Yes. Single-player mode pairs you with an AI partner against AI opponents, and a campaign offers structured PvE challenges at multiple difficulty levels. The game’s real strategic depth comes from PvP reads and co-op coordination, so solo mode works best as a practice tool for learning legions and wave patterns [5].

How long is a typical game?

About 20 minutes. Most matches end between waves 15 and 20. The theoretical maximum is wave 21, but one team’s king almost always falls before then [2].

What is the best legion for beginners?

Element. Proton (20 gold) is a reliable wave-1 DPS unit, Mudman (140 gold) is a forgiving mid-game tank with the Harden ability, and the legion’s attack types provide well-rounded coverage across most wave matchups. Forsaken is the runner-up—Bone Warrior’s regeneration and Gateguard’s summon ability both reduce the punishment for positioning mistakes [4].

Verified against Legion TD 2 v26.x, April 2026. Fighter stats and wave compositions may change with future patches.

Ready to take your game into ranked? Our Legion TD 2 ranked ladder guide covers the 5 habits that separate Master players from Gold — including scouting mechanics, mythium decision trees, and send timing strategy.

Looking for more games in this genre? See our guide to the best games like Legion TD 2 — 10 tower defence and auto-battler alternatives ranked by depth.

Sources

1. AutoAttack Games. Legion TD 2 — Multiplayer Tower Defense. Steam
2. AutoAttack Games. Legion TD 2 Official Gameplay Guide. Steam Community
3. LForward. The Legion TD 2 Guide (Updated 2.10). Steam Community
4. AutoAttack Games. Legion TD 2 Units Guide. legiontd2.com
5. AutoAttack Games. Legion TD 2 Game Manual. legiontd2.com
6. SteamCharts. Legion TD 2 Player Count and Statistics. steamcharts.com
7. Steam Community. A General Essentials Guideline to Ranked 2v2. Steam Community
8. Steam Community. Builds For New Players. Steam Community

Michael R.

I've been playing video games for over 20 years, spanning everything from early PC titles to modern open-world games. I started Switchblade Gaming to publish the kind of accurate, well-researched guides I always wanted to find — built on primary sources, tested in-game, and kept up to date after patches. I currently focus on Minecraft and Pokémon GO.