The Wall Mustn't Fall

The Wall Musn't Fall is a game about surviving an onslaught of enemies through the strategic decisions that you've made. You start off by selecting a hero with unique abilities. As you successfully defend, you are able to recruit ai controlled allies which you can level up by making subsequent purchases of the same ally or using an item or perk that will give them experience. Leveling up your allies will grant them stat bonuses and a new ability. You can gain synergetic bonuses by having a certain number of the same class of unit.

There are different weapons that serve different purposes and while any unit can equip any weapon, some weapons may make more sense on certain units. As your run progresses, weapons begin to have more effects. You can also pay gold to apply effects to weapons at the anvil.Gameplay
Defend
Shoot at enemies by left clicking on the mouse.

Use your active items and abilities by pushing the hotkey on the keyboard.

Alternatively, enable auto pilot and your hero will be controlled automatically just like your allies.

Kills grant your units experience which will give them stats points you can choose to apply whenever they gain a level.

Collect your loot at the end of the round.
Shop
Recruit new allies and power up your current ones. Try to synergize.

Purchase new weapons and items.

Distribute weapons and relics to your allies.

Choose your team's formation to optimize your synergies and abilities.

Upgrade your shop and castle.
Permanent Upgrades
Use the currency you acquired during the run to unlock permanent upgrades.

Currently 89 permanent upgrades.
Sacrifice
Beat it and have new challenges present themselves.