Infinity Drive

Infinity Drive is an endurance mode where the player must overcome waves of increasing difficulty for as long as they can.

Despite the name, Infinity Drive is finite and can be finished - there are 49 layers in total.

Basic premise
Infinity Drive begins on layer 1. Each layer (numbered 1-49) consists of either a boss, or wave(s) of enemies. All waves/layers are hardcoded, and not randomly generated.

To advance to the next layer, one must overcome every wave (or defeat that layer's boss).

Between layers, the environment often changes (holes, walls, rotating floors etc). All layers are the same overall size and circular shape.

The drive is over when the player runs out of Battery, or completes layer 49.

Like Daily Drive, players are ranked in terms of which layer they failed on. Score is only taken into account if two players failed on the same layer.

Layer color
Like Daily Drive, the color of the text displaying the current layer number directly corresponds to your current performance.


 * Blue: Easiest difficulty, but lowest battery spawn rate.
 * Green: Medium difficulty, medium battery spawn rate.
 * Red: Hardest difficulty, but highest battery spawn rate.

Dropping the combo chain at any time results in the layer color turning blue.

Holding the combo chain for an entire wave changes the color from blue to green, or from green to red. Note that a layer can consist of multiple waves, hence there are potentially multiple chances per layer to move up in layer color.

Holding red layer color becomes more and more important as the Drive progresses, and is all but necessary past Layer 30.

Strategy
Your ultimate goal is to prevent the Battery from running out, which means


 * killing enemies as quickly as possible, in order to spawn the battery quickly,
 * holding onto the combo chain as much as possible, in order to maintain red layer color and thus the highest possible battery spawn rate,
 * not getting knocked down.

Unlike any other mode, getting surge kills is relatively unimportant, since layer number primarily determines your leaderboard spot and not score.

Starch is recommended for this mode, as she has high survivability due to her high-DPS laser and versatile micro missiles. Cactus is also a decent choice due to her well-rounded primary and high-DPS flamethrower.

Try to keep both Firepower and Accelerate topped up as much as possible, and use Shutdowns when caught in a difficult situation. Dangerous enemies like Buster Titans and Mine Canisters should be your primary targets during a Shutdown.

Make good use of the invincibility frames granted by a weapon swap, eg. dodging through mines as they explode, hopping through lasers, or dodging into a crowd of enemies to grab a Shutdown.

Infinity Drive takes around 45 minutes for a typical run, which can be mentally draining and result in a lack of focus when it's most important. Consider pausing and taking a short break around the halfway mark.

Layers 1-6
Waves consisting of mostly basic enemies like Kegs, Fidos, Drones, Wasps, Mega Kegs, Titans, Bullet Turrets, etc.

Overall difficulty is roughly equivalent to an Area 1 or 2 level.

Layer 7: Embryo
The entire layer consists of the Embryo boss fight.

Since you can have a maxed weapon and/or powerups coming into the fight, the fight is a bit easier than in Campaign mode, and usually serves as a battery top-up.

Layers 8-14
Turbo Drones, Laser Turrets, Jumbo Fidos, Reaper Spectres, Vector Factories, Super Mines and Maser Turrets are gradually added to the pool of mobs that can spawn, in roughly that order.

Overall difficulty is roughly equivalent to an Area 3 or 4 level.

Layer 15: Vespula
The entire layer consists of the Vespula boss fight.

Since you can have a maxed weapon and/or powerups coming into the fight, the fight is a bit easier than in Campaign mode, and usually serves as a battery top-up.

Layer 16-22
Fetch Fidos, Tendril Factories, Mine Canisters and Orbital Factories are gradually added to the pool of mobs that can spawn, in roughly that order.

Overall difficulty is roughly equivalent to an Area 4 or 5 level.

Layer 23: Justice
The entire layer consists of the Justice boss fight.

Since you can have a maxed weapon and/or powerups coming into the fight, the fight is a bit easier than in Campaign mode, and usually serves as a battery top-up.

Layers 24-30
The difficulty increases higher, up to Area 5-level difficulty and beyond.

Banshee Spectres are added to the pool of mobs that can spawn at Layer 30, completing the list.

Layer 31
This layer is especially important because in order to access the Dark Embryo fight, you must be red layer color when finishing this layer. In other words, it is necessary to hold chain for the final two waves.

[more information about said waves]

Layer 32: Dark Embryo
If your layer color is red after completing Layer 31, this layer will consist of the Dark Embryo boss fight. Otherwise, it will consist of a single wave of enemies of typical difficulty of the layer depth.

The boss fight is difficult, but gives you a hefty battery advantage if you can overcome it without dropping the combo chain.

Layer 33
Layer 33 is particularly difficult as it contains both a spinning floor and a central hole.