A blast!

This game is just... not good. The game play itself is boring after a while, as the level are similar, with pretty much no different in term of game play. The game will drag out slightly on purpose by adding level that you cannot pass through without buying the "optional" upgrade as well.

Furthermore, while the game boast about the number of different weapons it has, and despite it is truthful as well, it is actually more of a drag than an actual advantage. The so many weapons are mostly useless, with a few needed for the level itself (unlocking areas) but mostly sitting there doing nothing. Once you find a few that's useful to you, you will waste most of the time changing weapon, since you can only go to next weapon at any time. The 12 or so weapons mean that you will need to constantly shuffling through the whole list before getting to the one you need.

An option to set a few favourite weapon for quick change will be way better.

Also, the money needed to buy things are so ridiculously expensive, that after I got to max level and managed the final boss as well as the extra challenge level, I'm still significantly short for buying most of the upgrade.