Endless Mode in Outhold starts off feeling pretty manageable, but once you get deeper into the waves, the mode becomes less about simply placing towers and more about building a strong economy that can keep up with enemy scaling. A lot of players focus too much on damage early and end up struggling later because they cannot afford important upgrades once the tougher waves begin.
The biggest lesson from this strategy is simple: Banks are incredibly overpowered.
This guide explains a reliable Endless setup that comfortably clears Wave 20 and can even push much further if managed properly. The strategy is not completely AFK since you will still need to place towers, buy upgrades, and occasionally adjust things, but once the build starts rolling, it becomes surprisingly stable.
Outhold Beginner Guide Wiki – Endless Mode, Wave 20
The core of this build revolves around:
- Building Banks as early as possible
- Scaling income aggressively
- Using Arrow Towers early
- Transitioning into Pulse and Fire Towers later
- Letting poison and utility effects carry the defense
Early waves are mostly about surviving cheaply while rushing your economy. Later waves become much easier once your gold income explodes.
One important thing to know is that auto-upgrade is not really necessary at the beginning. You can manually manage upgrades early for better efficiency. Also, rushing waves for bonus gold helps quite a bit during the early game, although money eventually becomes almost meaningless later once your banks are fully online.
Level 1 Strategy
Level 1 is extremely simple because you only have access to Arrow Towers.
Start by placing your first two Arrow Towers and upgrade each of them twice. After that, focus on getting a third and fourth tower down as quickly as possible.
Once all four towers are upgraded again, you should comfortably reach Wave 10 without much trouble.
This level is mostly there to build your starting upgrade tree and unlock the important economy pieces for later stages.
Level 2 Strategy
By this point, you absolutely want:
- Banks
- Arrow Towers
The economy setup begins here.
The important thing is not overspending on tower upgrades too early. You can upgrade your starting Arrow Towers once, but after that you should save as much gold as possible to place Banks quickly.
Buying extra tiles early is worth it because getting Banks online sooner massively increases your long-term income. As soon as you place a Bank, immediately buy the 20 gold upgrade for it.
That early investment pays for itself surprisingly fast.
Wave 3 Strategy
Wave 3 is where the build starts shifting toward poison synergies.
The most important upgrades here are:
- Earth Artifact
- Pulse Tower
The Pulse Tower becomes extremely strong because it constantly procs poison effects across groups of enemies.
Once again, the economy still matters more than damage at this stage. The strategy even recommends delaying tower placement slightly so you can place your first Bank near the entrance as early as possible.
Upgrade that Bank immediately because your future scaling depends heavily on it.
Level 4 Strategy
Level 4 is where “Bank supremacy” really begins.
At this point, your economy should start snowballing hard enough that money becomes less of a problem. The goal here is expanding Banks and preparing them for future utility and debuff upgrades.
You will still place backup towers for safety, but the main focus remains growing your economy because later levels allow more towers and significantly more expensive upgrades.
Once three Banks are running together, the gold generation becomes pretty ridiculous.
Level 5 Strategy
This level shifts focus slightly away from Banks for a moment because you want to save some upgrade colors for later unlocks.
One of the biggest upgrades here is the perk that reduces tower upgrade costs as towers get kills. This scales extremely well during Endless Mode because your towers constantly farm weaker enemies.
The strategy notes that some outer Arrow and Pulse Towers were probably unnecessary because the Wave 20 bosses never even reached those side paths.
A better use of gold would likely be:
- More central Banks
- Stronger central Arrow Towers
This is a good reminder that efficient positioning matters more than simply filling the map with defenses.
Level 6 Strategy
Level 6 introduces Fire Towers, and they quickly become one of the strongest parts of the build.
At the same time, you also gain upgrades that increase the amount of gold earned from enemies walking near Banks. This makes the economy scale even harder as enemy counts increase.
At this point, the defense becomes stable enough that you can safely rush some later waves for extra gold bonuses.
Once fully set up, the build comfortably handles the pressure without much danger.
Level 7 Strategy
This level continues focusing heavily on:
- Fire Towers
- Bank upgrades
However, this is also where enemies finally start getting dangerously close to your Outhold. From here onward, you need to actually monitor the map instead of assuming the defense handles everything automatically.
Keep checking:
- Tower upgrades
- Weak lanes
- Outhold health
Late waves punish inattentiveness much harder.
Level 8 Strategy
Level 8 becomes much slower because Pulse Towers start chaining through massive enemy groups constantly.
The original strategy jokingly recommends putting on a background video while playing because waves begin taking quite a while to finish.
One important lesson here is patience.
Saving for a fourth Bank might feel painful because it can take several waves, but the extra economy boost is completely worth it. Once that fourth Bank goes down, your gold income skyrockets again.
The overall tower pattern remains similar:
- Initial towers
- Banks
- More towers
- More Banks
- Upgrade everything
The strategy stays very consistent because the economy engine carries the entire run.
Level 9 Strategy
Level 9 removes most limitations, so the strategy fully transitions into an endgame setup.
By now, the build becomes strong enough to survive incredibly deep waves. The guide mentions the defense surviving until around Wave 55 before finally losing to a boss with over 2 billion health.
At this stage:
- Bosses exceed 1 billion HP
- The screen shakes constantly
- Performance starts dropping heavily
- Damage numbers completely flood the screen
The setup eventually reached:
- Wave 55
- Level 22 Lightning Tower
- Thousands of gold from early-wave bonuses
The biggest threat becomes performance rather than the enemies themselves.
The strategy also mentions that turning off damage numbers can improve FPS significantly, although keeping them on apparently looks cooler.
Important Endless Mode Tips
Prioritize Economy First
The biggest mistake beginners make is overbuilding defenses too early.
Banks scale harder than almost anything else in Endless Mode, especially once you unlock upgrades tied to nearby enemies and income generation.
Fire and Pulse Towers Scale Extremely Well
Arrow Towers carry the early game, but Fire and Pulse Towers become the real stars later because of:
- Poison interactions
- Crowd damage
- Multi-target pressure
Upgrade Placement Matters
You do not need towers everywhere.
Strong central defenses are often better than wasting gold on weak side lanes enemies barely touch.
Monitor Your Outhold Later
Early on, your base is mostly safe. Later waves are different.
Eventually enemies begin slipping through, especially bosses with absurd health pools, so healing upgrades become very important.
Overall, Endless Mode in Outhold becomes surprisingly addictive once the build starts snowballing. Watching your economy explode while huge groups of enemies melt under poison and fire effects feels incredibly satisfying.
The best part is that the mode still leaves room for experimentation. Even though Banks dominate this strategy, there are probably plenty of other fun builds players can create once they understand how scaling works in the later waves.