Stop complaining about the game being long it depends on how fast you level up because after you leave the bubble you reached the highest level you should find the boss in the next bubble.
I like the game but i think you need to change the coding so when you hit the screens edge you dont bounce because you end up bouncing into enemy's, plus make it so enemys cant go off screen cause its frustrating when you cant hit and off screen enemy like a hunter or a drone sneaks behind you from off screen. also needs badges. :p
Upgrade your speartons as fast as you can to the max and upgrade your miners speed to the max. a maxed out spearton does 103 dmg when the player is controlling. also when fighting giants hit then move back when they attack. rate high to keep on top.
money cheat = 1buy fire hose 2 get buddy in corner 3 fire 4 right click then click out screen. if done right the hose should still be hitting buddy. 5 go do something