Base

Your base has four floors, each with its own purpose. You can see all the upgrades you buy in each floor but you cannot interact with anything except your troops, the armory, and the cash printing device, which you should remember to collect when full.

''Note that certain upgrades have hidden functions when you interact with them, such as the rec room's guinea pig squealing and digging into it's bedding when you tap on it's cage, and the skeletal mannequin in the medical room making a rattling noise when tapped on. More can be found via interacting with upgrade-gained objects around your base.''

Top floor is medical. This is where your troops recover if they were knocked out in battles.

Next is your war room, where you can find your active squad and the cash printing device, to the far left.

After that, the floor below you is the rec room. This is where your troops go if you remove them from your active squad, or where they go if they return from training or healing should your active squad already be full.

At the bottom is the training room where your troops go when you send them to train. If the troop you sent has their slot replaced by another troop, they will return to the rec room instead of back in your active squad.

Upgrades
There are 7 different categories of items you can buy and upgrade for your base, each with different functions and upgradeable levels. Each rank requires a different level on your cash printing device to be unlocked (At the moment I have already bought some upgrades and I dont remember the exact prices so message me if you do or if you see a mistake)

Armory
Store skills and weapons to share them between troopers. Max slots in the armory increase with each level by a count of 8, with the minimum level (1) having 8 slots, and the maximum level (10) housing a grand total of 72 slots. This does not function like the backpack, as backpacks store separate type-based items, and the Armory stores items non-exclusively, and is available to view from any troop.

Airstrike
Call for a number of massive strikes during each mission. Airstrikes do heavy damage against grouped, weak enemies, and become less effective against stronger enemies (take enemies like Thrasher and Volt, and bosses like Goody-Goody for example), as there is no damage stack, increase in rockets fired, or applied debuff.

Cash Printing Device
Produces cash per hour. Each level has increased max hold limits. Don't forget to collect money stored every so often, as the device stops entirely once the max threshold is reached, and no new money will be printed.

Rec Room
Increases the amount of troops you can have in your army, and acts as an area where off-duty troops are sent after healing or training.

Exercise Machines
Each upgrade gives you an exercise machine so you can train more troops at the same time. Note there are no benefits to troop training gains, only spaces for more troops to train are given.

First Aid Kit
Heals an injured soldier to full health during battles, and cannot be replenished during a battle. This does not work as a resuscitation item, and can only be used so long as a troop has health remaining.

Military Medicine
Allows for faster recovery of your troops after they get knocked out in battle. There are no upgrades to the amount of troops able to heal at once, but can reduce the recovery time of troops knocked out with critical hits as well, although to a lesser degree.

Resuscitation Unit
Allows to revive your troops in battle if they get knocked out. It can only be used in the next wave after your troop has fallen, and can't be used if a battle wave is active, or during PvP battles. It also cannot be used if you move to a wave where the resuscitation was available, but was not used at the time.

to be continue...