5 stars: This game is one of the best I've played of its kind. Love that it doesn't shove ads down my throat but you can use the ads for bonus material or an extra life. The weapon switch function is very cool and has left me putting many hours into the game. Also the fact that there is no energy to use can leave me playing this game for quite a while without having to wait for energy to regenerate.
4 stars: I had paid for the passes (twice) and the game crashed, had to reinstall and lost all progress and purchases. It was already very repetitive and losing interest, but now losing my purchases? I'm done Update: the support team helped me reinitialize my account and I was back to where I was. Some fun new additions since the issues last spring. But in the future, I'll reach out to support first before the poor review.
3 stars: Game is great but as you progress, upgrading the weapons keeps getting hard and requires rare items. Those items are only available in $50 package. You stop getting uncommon items in chests after a certain level and you eventually hit the paywall. Then you're just stuck doing daily missions for chests as you can't really progress further due to weak weapons and stronger enemies.
4 stars: Great to pass time, good level design and weapons Only issue is at a certain point, without paying, you cannot progress far due to lack of money or decent gear, so enemies become bullet sponges where you'll empty all your guns and try kite while waiting for ...