I must say, for a £2 game, you really chew than you can bite. already being a fan of Ice's artwork, I enjoy playing a classic NES game within this art style. although it's limited to it's weapons and enemies, it doesn't take away the joy and difficulty.
Sadly I hate to announce some bugs still within the game which I feel I should address. 1: in zone 3 (The bonezone) there's an odd chance you'd die and restart ALL the way at the back of the level, rather annoying if you're doing a completionist (Which I am). 2: With a secret achievement (Involving bosses) I have managed to do it but yet have not received the achievement. 3: the 2nd character is always stuck every respond.
BUT all the negativity of bugs out the way, I can happily say this is worth a try, the weapons are pretty fun to try but for those who completed the game should know there's always that one OP weapon out there. the bosses varies pretty well, from knowing the patterns and timing, although sometimes there are impossible combo's to pass.
All in all I'd give this an 7/10