Thanks for your feedback! I'm really glad you enjoyed the game.
Note your opinion on the weapon drops. I'll have a think about if this can be improved.
There are menus displaying the weapons and stat upgrades - this will be available in the full version.
The x2/x3 chance should perhaps be re-written. The way it works is that it increases the existing (hidden) chance to draw x2 or x3. For example, if you have a baseline 10% chance to draw an x2 and you have a 20% upgrade, then the amended chance is 12% (10% x 1.2).