Movement
W - Move character up
A - Move character left
S - Move character down
D - Move character right
Loadouts
Left click - Use item in left click slot
Right click - Use item in right click slot
Left click + SHIFT - Use item in left click + shift slot
Right click + SHIFT - Use item in right click + shift slot
Left click + CTRL - Use item in left click + ctrl slot
Right click + CTRL - Use item in right click + ctrl slot
Z - Use item in Z slot
X - Use item in X slot
C - Use item in C slot
Q / Mouse wheel down - Rotate loadouts left
E / Mouse wheel up - Rotate loadouts right
SPACEBAR / Middle mouse button - Switch to previous loadout
Inventory/Items
TAB - Open/Close inventory
Left click item (with inventory open) - Pickup item
Left click with item onto floor - Drop that item onto the floor in the position of the cursor
Left click with item onto loadout/inventory slot - Put the item into the inventory/loadout slot
Right click a stackable item (with inventory open) - Break the stack into sizes of your choosing
Main menu
ESC - Open/Close main menu
Health
H - Toggle constant health on/off