Well, I was going to say this was a decent if cheesy game...then I died and discovered the hidden, completely broken P2W cash shop you need to buy more lives in that others have mentioned. Hello to starting a new save and just replaying past missions on higher difficulty to rack up a few hours of play time instead.

If you're still curious about DHL it's an arcade on-rails timed animal shooter that badly shows its age in the visual and audio departments, nothing more. Usually every 15 to 20 levels you'll face a boss animal, beating that will unlock a new area for you to rinse and repeat in, just with one or two new "legendary" animals. Provided you get killed in the T-Rex boss fight (yes, really) in the second area like I did, you can expect about an hour twenty of gameplay for your cash.