click to shoot kill the bugs upgrade the shooty click the upgrades when you buy them to change the shooty click a upgrade when you have equipped one to change back to normal
next big update will include: new enemy types extra gun upgrades bug fixes update log: v1.1 added health system v1.2 added speedy variant v1.3 added pausing mechanic v1.4 fixed selecting upgrades bug v1.5 added squad type v1.6 made the mini gun feel like a real mini gun v1.7 added zigzag type