Not much to add to other reviews, besides the fact that it plays nothing like Contra or Metal Slug or "old arcade games". First of all you have hitpoints, whooping five of them on normal. You have your standart gun with infinite ammo, subweapon on cooldown and levels peppered with powerful sidearms. You can dodge, you can cover, checkpoints heal you, etc. For like 3/4 of the game it's really hard to die, besides pitfalls. Then it kicks it up a notch mainly with the bosses, but you just gotta learn the patterns and be patient.
Yeah, there is a cheat menu for 100% completion (find secrets, kill X number of guys and don't die on every level) and harder modes (less health), but I can't say that I'm that interested to play more after first story mode clear.
Presentation is the best thing going for that game, especially if you like The Warriors, but they couldn't help themselves and add VHS era easter eggs, like every "retro" pixel game must have nowadays.
+
Oh, and I played with John Sawyer and his one liners are kinda annoying. They are way to dumb and his voice actor sounds like Jon Bailey (Epic Voice Guy)