This incremental idle TD is insanely good
Nerfed Reflexes
A fresh start on the full release. Good for seeing exactly when each feature unlocks.
Guide · Wave 1 → 2,000
Short version: fill every slot as soon as Castle Upgrade opens it, turn on skill auto-cast, and push to wave 80, where the Rift Gate and battle speed-up open. When a wave stops you, farm Rift bosses and improve gear at the Blacksmith instead of grinding the same wave. Below: what unlocks when, where each currency comes from, how far players really get, and what each system is for.

The game gates most systems behind waves, Castle levels or a gold fee. We read these requirements off the unlock screens shown in full-release gameplay videos (2 November 2026); the "seen at" link jumps to that moment.
| Feature | Requirement | What it is for | Seen at |
|---|---|---|---|
| Cannon slot | During the tutorial, after a few Castle upgrades | The first cannon, the Siege Bow, is aimed by you when you play manually. | 10Min Reviews 0:49 |
| Warehouse | Castle level 5 | Stores shards and upgrade materials. | Dabble 4:40 |
| Training Grounds | Around wave 20, for gold | Spend EXP on permanent stats. | Nerfed Reflexes 7:15 |
| 4th hero slot | Castle level 50 | More slots keep opening as the Castle levels up. | Nerfed Reflexes 21:49 |
| Demon Lord Tower | Wave 55, 10,000 gold | Boss floors with element modifiers. | Nerfed Reflexes 9:40 |
| Talents (Talent Bureau) | Castle level 60 | Points arrive at set waves; right-click a node to refund it for free. | Nerfed Reflexes 25:57 |
| Rift Gate | Wave 80, 10,000 gold | Boss raids that drop equipment. | Nerfed Reflexes 9:40 |
| Battle speed-up | Wave 80 | Before that, battles run at normal speed. | Nerfed Reflexes 7:15 |
| Black Market | Wave 85 and 100 diamonds | Exchanges, blueprints and blind boxes. | Nerfed Reflexes 9:40 |
| Blacksmith | Own 5 pieces of equipment | Enhance, enchant and reroll gear. | Nerfed Reflexes 9:40 |
| Treasure Altar | A hero at level 155, then 10,000 gold | Equip Treasures for passive effects. | AboboKnows 16:42 |
Plan around two walls. Wave 80 is the big one: it opens the Rift Gate and speed-up at once, so pushing there quickly pays off. Then a hero at level 155 opens the Treasure Altar, which matters for the Treasure achievements (only 15.4% of players own 10 Treasures).
| Currency | Where it comes from | What it buys |
|---|---|---|
| Gold | Every wave, Mine (human miners), missions, boss clears | Castle Upgrade, hero levels, facility unlocks, Treasures |
| Diamonds | Defense missions (e.g. 25 for clearing wave 5), Mine (orc miners), achievements in-game | Recruiting: 100 diamonds for 10 recruits; Black Market |
| EXP | Battles | Training Grounds and Peak Training |
| Shards | Duplicate recruits | Star-ups for heroes, turrets, cannons and captains |
| Talent points | Reaching set wave numbers | Talent tree (5 pages) |
| Blueprints | Beating your best wave | Hiring and upgrading miners |
| Orc tokens | Defense missions, Demon Lord Tower, every 1,000 waves cleared | Orc miners (they dig diamonds) |
| Equipment | Rift bosses (Red Dragon: rare chest; Fairy Dragon: fabled gear) | Two gear slots per hero; each class takes its own type (bow, sword, wand…) |
Diamonds are the bottleneck most players hit, because recruiting is the only way to get new units and shards. That is why orc miners matter: human miners dig gold, orc miners dig diamonds. In one mid-game save we watched (three human and two orc miners), the Mine made about 22,000 gold and 120 diamonds an hour (AboboKnows 1:39).
Steam's achievement stats show what share of owners have reached each milestone. Use them to see whether you are ahead or behind the pack. Data from 2026-11-03, one day after launch.
| Milestone | Achievement | Players |
|---|---|---|
| Wave 20 | First Defense | 99.0% |
| Castle Lv 50 | Trainee Commander | 89.9% |
| Wave 100 | Veteran Defender | 75.0% |
| First Red Dragon kill | First Raid | 51.8% |
| Castle Lv 200 | Castle Lord: Lv. 200 | 55.6% |
| Wave 350 | Ace Defender | 43.9% |
| Demon Lord Tower floor 5 | Halfway Up | 33.7% |
| Wave 1,000 | 1K Waves Defended | 23.4% |
| Fairy Dragon kill | Rift Skirmish | 22.2% |
| Castle Lv 1,000 | Castle Lord: Lv. 1000 | 19.2% |
| Wave 2,000 | 2K Waves Defended | 15.6% |
| Goblin King kill | Rift Rivalry | 11.6% |
| Bone Dragon kill | Rift Clash | 3.7% |
Two things stand out. First, only 51.8% have beaten the Red Dragon even though 75.0% have reached wave 100. The Rift Gate needs wave 80 plus 10,000 gold, so many players simply have not opened it, and they are missing the main source of gear. Second, the Demon Lord Tower is opened by about two thirds of players (64.7%) but only 18.9% clear floor 10.
Main waves throw a boss (Goblin Shaman, Goblin Chief) roughly every ten waves, and monsters get much stronger at main-stage 1,000, 2,000, 3,000 and so on (the developers call these Monster Boosts). When a wave stops you, power comes from side systems, not from repeating it:
Placement barely matters; what you combine does. Combos from the official patch notes:
See every unit and its source on Heroes & bosses.
The Solar Turret makes incoming enemies stronger (Attack and HP) and pays more coins and EXP for them. Use it when your defense clears waves with power to spare and you want faster growth, for example while idling overnight on a wave you beat easily. Take it out the moment the castle starts taking damage.
Opens at wave 55 for 10,000 gold. Each floor is a timed boss stage with a field effect: enemies are weak to one element and resist others, so swap in a team of the weak element before you try (AboboKnows 29:50). In a Thai full-release playthrough, floor 1 showed enemy power 50, a 100,000 gold reward and a fire weakness worth +75% fire damage (Tietie TH. 18:30). The Day 1 Hotfix made floor 1 easier. Clears also pay orc tokens. Achievements are given for floors 1, 2, 3, 5, 8 and 10.
Demo progress carries over to the full game, and the game supports Steam Cloud. The Day 1 Hotfix fixed saving on Steam Deck. Keep the game updated: the developers ship fixes quickly.
Three full-release runs from launch day. The chapter links start the video at the moment we cite above. The fourth is the critical take, for balance.
Nerfed Reflexes
A fresh start on the full release. Good for seeing exactly when each feature unlocks.
Dabble
Another fresh full-release start, with the Mine and the unlock list explained along the way.
AboboKnows
A mid-game save (wave 100 → 166) with a fire-and-ice team. Best single tour of the menus, recruiting and the first Rift boss.
10Min Reviews
The critical view: plays the tutorial, finds the early unlocks slow and scores it 6/10.
More in every language on our video page.
Sources: official posts on the Steam page (Blacksmith, Demo launch, Demo update, Solar Turret, Day 1 Hotfix), store screenshots, Steam's global achievement stats, and the gameplay videos linked above (requirements read from on-screen unlock text; creators' own opinions are not used as facts). Advice on order and when to use what is our own reading of those sources.
Castle Upgrade first: it opens more hero, turret and cannon slots (Castle level 50 gives the 4th hero slot), and filling slots is the biggest early power jump. Spend EXP in the Training Grounds once they open around wave 20.
Battle speed-up unlocks at wave 80. Skill auto-cast is available much earlier through the Auto button.
The Demon Lord Tower opens at wave 55 and the Rift Gate at wave 80; each costs 10,000 gold to unlock.
Early on from defense missions; later mainly from orc miners in the Mine. Orc miners need orc tokens, which come from missions, the Demon Lord Tower and every 1,000 waves cleared. The Black Market also trades gold for diamonds.
Stop pushing waves for a while. Farm Rift bosses for gear, improve it at the Blacksmith (enhance, enchant, reroll affixes), check the Training Grounds and talents, then come back. The developers recommend exactly this loop.
Barely. The developers designed the game so you do not lose range by being a tile off; lineup and element combos matter far more than position.
Only when your defense has spare power. It makes incoming enemies stronger (Attack and HP) and pays more coins and EXP in return. Take it off if waves start leaking.
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