How to Build a Winning Deck in Monster Train 2: Units, Spells & Upgrades

Last Updated on 25 July, 2025

This guide will teach you how to crush runs in Monster Train 2 by choosing the right clans and Pyre, building a focused deck, and defending all three floors. You’ll learn route planning, upgrade shops, champion and artifact synergies, and meta-progression tips drawn from not only our own comprehensive gameplay, but also top community and professional sources

Table of Contents

• • 1. What Is Monster Train 2?
  • 2. Getting Started: Clans, Champions & Pyre
  • 3. Core Mechanics & Three-Floor Defense
  • 4. Deck-Building Basics & Synergy
  • 5. Route Planning & Event Choices
  • 6. Combat Phases & Unit Placement
  • 7. Upgrades, Artifacts & Merchant Shops
  • 8. Advanced Strategies & Combos
  • 9. Meta-Progression & Covenant Levels
  • 10. Pro Tips & Tricks
  • Conclusion

1. What Is Monster Train 2?

Monster Train 2, released on May 21, 2025, is a roguelike deck‑builder from Shiny Shoe and Big Fan Games, where angels and demons unite aboard a multi‑floor train to battle godlike Titans. It builds on the original with five brand‑new clans, strategic Room and Equipment cards, and customizable Pyre Hearts that grant varied perks. Players engage in fast‑paced, turn‑based tower‑defense card combat across three train levels, with modes like Path of Champions, Dimensional Challenges, and Endless to boost replayability.

• Genre: Roguelike deckbuilder on a three‐level battlefield defending a moving train.
• Premise: Demons and angels unite to reclaim Heaven’s gates from the Titans; fight across Hell’s railways.
• Battlefield: Three vertical floors; if any enemy reaches your Pyre on the top floor, you lose.
• Modes: Story campaigns, Dimensional Challenges, Daily Challenges, Celestial Alcoves and multiplayer trivia events.

2. Getting Started: Clans, Champions & Pyre

Each run begins by selecting a Primary clan (determines your Champion and core cards) and an Allied clan (secondary card pool). You also choose a Pyre Heart, which grants a unique run-long effect.

3. Core Mechanics & Three-Floor Defense

Monster Train 2’s tension arises from defending three floors simultaneously each turn:

1. Deployment Phase: Spend Ember to place unit cards on any floor (1–3).
2. Battle Phase: Units on each floor fight in parallel; surviving enemies advance one floor next turn.
3. Pyre Health: Located on floor 3; if it drops to zero, run ends.
4. Choke Strategy: Sacrifice floor 1 units to weaken waves, then consolidate on floors 2–3 for strong holds.
5. Ember Management: Unspent Ember carries over; plan your spend for max tempo.

4. Deck-Building Basics & Synergy

Monster Train 2 features diverse card types; Unit, Spell, Equipment and Room cards that must mesh within your deck’s theme.

1. Core Units: Frontliners (tanks) vs. backliners (damage dealers), so keep glass cannons behind beefy meat shields.
2. Spells: Firestarter (direct damage & Pyregel), buffs/debuffs, some can be upgraded to Holdover or Spellchain for repeat use.
3. Equipment Cards: Attach to units permanently e.g., weapons, armor, utility items for sustain.
4. Room Cards: Modify train floors with passives like traps, buffs or hazards; choose based on your deck’s strengths.
5. Deck Culling: Remove low-impact cards at Merchant of Arms/Magic to improve draw consistency.
6. Card Upgrades: Strengthstone (+Attack), Shieldstone (Damage Shield), Frenzystone (Multistrike), Dualstone (double buffs), so prioritize multistrike on units with abilities.

5. Route Planning & Event Choices

After each battle, you select one of two routes. Routes spawn various nodes; shops, relics (artifacts), campfires, trials, merchants and events.

1. Merchants: Merchant of Arms (unit upgrades), Merchant of Magic (spell upgrades), Merchant of Trinkets (artifacts).
2. Artifacts: Permanent buffs like Ancient Pyretap (use Pyre HP as Ember), Capricious Reflection (random card upgrades).
3. Trials: Add run debuffs for extra gold reward; safe early, skip later if you can’t handle the penalty.
4. Campfires: Rest to heal Pyre; upgrade Ember capacity or draw options.
5. Dimensional Challenges: Unique mutator runs for leaderboard competition and cosmetic rewards.
6. Celestial Alcoves: Random narrative events with special card or relic rewards, so always explore one per run for surprises.

6. Combat Phases & Unit Placement

During Combat Phase, units attack simultaneously on each floor, then surviving enemies shift up a floor. You can also cast cards from your hand to affect enemy or unit stats first.

1. Hand Damage: Use direct damage cards (e.g., Firestarter) on fragile threats like healers or ranged units to prevent enemy buffs or heals.
2. Perfect Timing: Use Quick units or cards with Quick modifier to act before standard attackers.
3. Champion Deployment: Champions auto-play at start of combat, so position on floor 3 for Fel’s Valor stacking, or choose placement based on clan synergy.
4. Shift & Valor: Underlegion’s Shift moves units, so trigger spawn and buff combos by placing units that shift floors each turn.

7. Upgrades, Artifacts & Merchant Shops

• Upgrade Depth: Don’t spread upgrades thin, so max two per key card for exponential power growth.
• Artifact Synergy: Artifacts that complement your clan (e.g., doubling Valor, extra card draw) multiply deck strength.

8. Advanced Strategies & Combos

1. Funguy Spam: Underlegion + Cluster Colonel + Amorous Enoki creates endless spawn loops, so place on floor 3 to maximize growth before waves hit.
2. Valor Burst: Banished + Fel + Valor relics + Multistrike => instant kills on floor 3; focus buffs on Fel early for carry runs.
3. Spellchain Nexus: Upgrade one Cast spell with Spellchain & Holdover, duplicate via relic, then flood hand with AoE clears.
4. Room Combo: Propagate Room in fungus builds stacks spawn each turn; combine with room cards granting +1 Spawn per turn.
5. Equipment Rush: Lazarus League + Meathook + Shadow’s Sheath turns frontliners into unblockable glass cannons, use Daze mechanics on bosses.

9. Meta-Progression & Covenant Levels

Between runs you unlock:

1. Clan Mastery: Play runs to level clans; higher clan levels unlock new cards and champions.
2. Covenant Levels: Increase difficulty for better score, new renown rewards and permanent Pyre hearts.
3. Pyre Hearts: Earned by reaching score thresholds; choose powerful passive run modifiers like duplicating cards or extra Ember.
4. Daily & Dimensional Challenges: Unique mutators for cosmetics and leaderboard glory.

10. Pro Tips & Tricks

1. Read Every Card: Keywords like Pyregel, Quick, Spellchain and Shift have outsized impacts, you learn them by trial and error.
2. Use Undo & Restart: Don’t fear the “undo” button or battle restart, they’re built-in learning tools, not cheats.
3. Balance Board Presence: Maintain at least one unit on each floor until you funnel, as overstacking a single floor early can invite lethal splits.
4. Bomb Shops for Rerolls: Use bombs in shops to reroll wares for free if you plan to steal a single high-value item or free tier relic.
5. Artifact Priorities: Ancient Pyretap and Capricious Reflection top picks; shadow’s Sheath for stealth-burst comps; Sinner’s Salve makes curse decks trivial.

Conclusion

Monster Train 2 refines three-floor deckbuilding with clan synergies, champion power spikes and endless meta layers. Start with Banished & Fel on Covenant 0 to learn tempo, then experiment with Underlegion funguy spawns, Pyreborn scaling, or Luna Coven spells. Master route planning, shop upgrades and key artifacts to cement your win rate. Progress clan levels, earn Pyre hearts for new modes, and tackle Dimensional Challenges for leaderboard glory. Now board the train, champion your clan, and steamroll Titan armies!