Bubble tanks 2 is a great game, but it can be sometimes hard to get to the final upgrades. Going in a square motion around the starting place is the best way to fight easier bubbles and quickly upgrade. I would put it this way... Heavy Tier- Easy.... Normal tier- Normal.... Speed Tier- Hard. Finding tanks with life bubbles can be difficult but pay off because they contain 50 bubbles. Little guys are another great way of gaining bubbles and dont fight back! The final boss can be reached and beaten without having to fight anything big and scary, play it! It's a very good game, with great replay value!
