Here's a review after finishing the game with both the main characters and trying the third, hidden one.
TL:DR? Challenging 20 levels of platforming with wild west style. Like Megaman, if you're familiar with those.
Gunman Clive is a short but challenging platformer of minimalistic but nevertheless adequate graphics. There are three playable characters, one of which you have to unlock, each with their special skills. There are about 20 levels, every 5th of which is a boss battle. They take you through the wild west and the story hilariously hyperboles towards the end.
Levels are sidescrolling action that last only a minute or so per stage. However, they're also quite challenging, requiring multiple tries to get through. Bosses have anywhere from 2 to 4 different attack types. Challenge rises from the low health of the player who can take only two hits before dying (on Hard difficulty) and also from death falls and insta-kill spikes of certain levels. Obviously, once you get familiar with the game it becomes a lot easier to avoid enemies and go through the previously difficult spots. Warning though if you're easily irritated, you might get momentarily frustrated with some spots.
After a while the game begins to resemble very much the Megaman games of NES. While you have infinite ammo, your rate of fire is limited by your weapon. Many features of the levels from enemies to obstacles also resemble Megaman, from moving platforms to appearing and disappearing blocks to alternating gravity and wind machines. Admittedly, these features are part of virtually any decent platformer, which this one certainly is. There are also a couple of special levels with slightly different moving capabilities akin to Gradius (continuosly moving, sidescrolling shooter) and just about any sidescroller with rideable minecarts.
I hope I'm not spoiling too much if I reveal that the third character is unlocked after finishing the game first and is a duck that can't attack, only fly short distances
. This game mode is also a bit more difficult because of these limitations. Because of this there are also no bosses in this mode for obvious reasons
and it is basically a different game altogether. This mode is very challenging to complete perfectly, adding several hours of play time to the game.
For such a small price this is a good platformer, maybe even too cheap for its content, for now it's like on a permanent discount. I hear it has been first released on 3DS, now rereleased on Steam with achievements. These are of the speed-run, no-damage run types with different characters. They can be quite difficult, though you can do the no-damage and speed-runs separately. The most difficult one is the one requiring completion of the game without dying. There are two versions of this achievement, one for the initial characters and another, probably more difficult one for the duck
. I have yet to get all the achievements.
Some people seem to have become upset because of some "misogynistic content". Myself, I found this concern hilarious. You can play either as the guy or the girl and save the other one. This is the incentive for the story. It isn't very original but the story isn't exactly the reason to play this game: it works splendidly for what it is.