Between every wave the Armory opens. It's where runs are won or lost — the right buy order keeps your damage ahead of the horde's health. Here's how the shop works and what each of the eight upgrades does.
Clear a wave and a short shop cutscene opens the Armory, stocked from your run cash. It has three tabs (hotkeys 1/2/3):
The deployables — Boom Barrel, Proximity Mine, Sentry Turret. Buy in bundles.
Eight permanent (per-run) stat boosts. Each level costs more than the last.
Everything you buy lasts for the current run only — a fresh run starts you back at fists. There's no persistent meta-progression in the Alpha build (gems, the meta-shop and cosmetics are switched off in Alpha).
You earn cash two ways:
Each upgrade stacks up to its own level cap, and every level costs more than the last. Plan around the caps — some upgrades keep paying out across many levels, while others top out after just a few.
The survivability backbone, and it heals you to full on purchase — so buying HP mid-run is also an emergency top-up. With the highest level cap in the shop, it's the single biggest pool of effective health you can buy. A core early purchase on any run aiming to finish the Campaign.
More speed means cleaner kiting and easier dodges — every fast enemy (Runner, Spawnling) becomes more manageable. It has one of the lowest level caps in the shop so it can't trivialise the chase. A little goes a long way; one or two levels smooths out the whole game.
A flat multiplier on all your weapon damage, with one of the deepest level caps in the shop. This is what keeps your kill speed ahead of the bosses' scaling HP — under-investing here is the most common reason a run stalls at the Necromancer or the finale. Stack it alongside whatever gun you're maining.
Tighter time between shots — effectively more DPS and more bullets in the air for crowd control. Pairs especially well with high-per-shot guns (Pulse, Carbine) and turns the Uzi into a genuine shredder.
Flat damage reduction on everything that hits you, up to a hard cap so you can never become fully invulnerable. Multiplies the value of your health pool — pairing Armor with Max Health makes you remarkably hard to kill in the late areas. Note it does not protect against the out-of-bounds drain.
Passive health regeneration — small per tick, but it adds up across the calm between waves and turns chip damage into something you recover from for free. Great on longer Endless runs where you can't always reach a health drop.
Two effects in one: it widens the vacuum that sucks gold and pickups toward you (so you stop missing nuggets mid-kite) and raises your cash income with every level. An economy snowball — buy it early and every later purchase comes faster. The cheapest of the eight to start into.
Faster stamina recovery and a bigger bar — more dashes and more melee before you tap out. Essential for dodge-heavy play against Stalkers, Bombers and the fast bosses like the Warlord, and for anyone leaning on the Fists. Cheap and high-impact for an evasive playstyle.
