MoveW A S D / left stick
AimMouse / right stick
ShootLeft click / right trigger
AbilityQ / LB or X
UltimateE / RB or Y (charges over time and by dealing damage)
Upgrades1 2 3, click a card, or D-pad left / up / right
ArmoryAfter every wave the game pauses until every player has picked a weapon or defence mod
QuestsEach wave has an optional team quest (top of the screen). Completing it gives everyone an extra mod pick
ReviveStand next to a downed teammate for 3 seconds
OtherEsc = menu (pauses in solo), M = mute
Waves never end. A boss arrives every 5th wave - its attacks are always shown in red before they land. The run ends when everyone is down.