Let's talk about the conclusion first: if you want to speed pass this game, the core is three words - threshold. Don't be fooled by "tactical-level naval battles". The bottom layer is a game of converting resources into output efficiency. I finished pushing the main storyline of Chapter 6 (without krypton) on the third day after the server was launched, and I broke down the logic for my brothers.
Two things to start with:
First, spend all the initial gold coins on the shipyard expansion, do not draw ships. The Fletcher-class destroyer sent by the system has a basic speed of 32 knots and a reload time of 1.8 seconds. This thing is your early-stage work emperor.
Second, alloys must be dropped at the first mission point in the map. Don't rush to build a new ship. Prioritize upgrading Fletcher to the secondary main gun (damage +12%). Why? Because the armor threshold of the enemy submarine in the early stage is 170, the single-shot damage of the secondary main gun just breaks through the defense (actual measurement: 168 → 172). This extra step actually increases the killing efficiency by about 40%.
The logic of mid-term troop matching:
Many guides recommend "two destroyers and one cruiser". I have actually measured that the cruiser's steering rate is two percentage points higher, but the cost is 2.3 times that of the destroyer, which is very low cost performance. The correct speed push configuration is 3 expulsion + 1 supply. The supply ship can be built as low-level as the Lafite class, which only carries maintenance drones and does not participate in combat. In this way, the repair CD for each battle is only 12 seconds, which is equivalent to the blood volume automatically returning to full before each wave of enemies.
Specific operations: In the beginning, auto-cruise is activated for all expulsions, and the formation is selected in horizontal rows (triggers focus fire buff, critical hit rate +8%). When encountering an enemy aircraft carrier, manually lock the machine and clear it within two rounds of shooting, and the aircraft carrier will remain in a daze.
Let's talk about the mathematics of resource recycling:
Gold coin income formula: Combat rating S level = Basic gold coins × 1.5. If you want to be S-level, you must end it within 5 minutes and 30 seconds and keep the battle loss ratio below 15%. So don't be greedy and only get the core rewards (blueprints and accelerator cards) for each level. Those side tasks with "scientific research points" have 30% lower income than the main tasks, so skip them directly.
The priority of using accelerator cards: Dockyard upgrade > Main gun modification > Ship unlocking. Because each level of shipyard is upgraded, the combat capacity increases by 1, and you can bring one more expel, which improves the map-making efficiency exponentially. I have calculated that it takes 12 hours for the shipyard to go from level 4 to level 5. After using the accelerator card, I can directly skip Chapter 5 and earn two S-level level rewards, which is equivalent to exchanging time for space.
Finally, a little trivia: In the boss battle in Chapter 3, the enemy's flagship is a heavy cruiser with 180 armor and two reconnaissance planes. The conventional way of playing is to be lit up by the reconnaissance aircraft first, and then receive a round of volley fire. The correct solution: retreat two spaces at the beginning (don't click on automatic), wait for the reconnaissance aircraft to enter the air defense circle, and manually release two standard anti-aircraft barrages (reloading takes 30 seconds, just turn around). After destroying the reconnaissance aircraft, the heavy cruiser will briefly lose sight for 3 seconds. At this time, the destroyer will fire a salvo of torpedoes in the face, doubling the damage. This technique can reduce your clearance time from 7 minutes and 20 seconds to 4 minutes and 50 seconds.
To summarize the speed pass formula: dock level > number of destroyers > main gun level > skill level. By investing resources according to this priority, players without Krypton can steadily pass the first six chapters in 3 days. If you are stuck at 5-2, check if your supply ship forgot to upgrade the drone bay. Many brothers died here.