Bulwark is a three-lane castle defense. Catch +1 boxes on the left to grow your archer line, blow apart power-up barrels on the right to load fire, ice, gravity, spread, and super-freeze arrows, and stop the monsters charging up the middle ramp. Twenty-one levels lead up to the Cosmic Leviathan, a three-phase final boss. Bank coins between runs and spend them at the Royal Quartermaster to permanently sharpen your tips, recruit a bigger retinue, and raise your gold take.
Early in a level, prioritize the recruit boxes on the left to grow the volley — more archers means more arrows per release. Once your line is fat, save your fastest fire for the middle ramp during a charge wave. Pair elements: a freeze barrel followed by a spread shot locks an entire wave for free DPS. At the Royal Quartermaster, grab the gold-take upgrade first — it pays back every other upgrade twice as fast.
Hit the Fullscreen button in the bar above the play area to expand. To exit, press Esc (or swipe down from the top edge on touch) and tap the Exit button that slides in.
Bulwark is a lane-defense game about timing volleys, not passively watching towers shoot. Recruit crates increase the size of your firing line, elemental barrels change the next shot, and the best levels ask you to decide whether to spend attention on growth or immediate survival.
Build your archer count before chasing fancy shots. A frozen wave is only valuable if you have enough arrows to punish it while it is stuck. When a large charge forms in the middle lane, hold a power shot for the moment the enemies bunch together instead of firing as soon as the icon appears.
The later campaign levels are tuned around learning the shop, so a first-clear route usually includes economy first, then crowd control, then damage. If the Cosmic Leviathan catches you underpowered, replay earlier levels to fill out the permanent upgrade path rather than grinding the same failed finale.
