What a disappointing sequel !
Half-Minute Hero was a very clever game. At first glance, it seemed to be just a parody : it mocked grindy RPG with cliche story. But once you delved into it you found a very original gameplay system, with lots of cool ideas. The maps were full of secrets and branching paths, and the combat system had some clever mechanics for people that wanted a challenge or wanted to find all secrets.
The Second Coming, by trying to add more stuff is now...a grindy RPG with cliche story. The super cliche plots are force fed to you through endless and pointless dialogs. The "metagame" added is a grindy RPG (not sped up) with linear plot, repetitive gameplay, forced backtracking to unlock all items, etc. Exactly the kind of games the first game was mocking.
The new combat features (Skills, formations, party, classes, etc...) are also completely broken. All attempts to use theses features will be constantly thwarted by the game, which reset your formations, party, equipment everytime a story event requires a single change (which is...almost always). "Luckily" you actually you do not have to use theses features most of the time, as brute forcing is often the way to go.
Unfortunately, brute forcing can be applied to everything in the Second Coming. Most of the cleverness of the combat is gone : there are tons of items, but they don't have special attributes anymore like you could find in the first game. So you just get whatever give you the biggest stats bonus and rush. No need to be clever anymore, just go through the motions, endure the repetitive combats and you will win all missions. Even the secret titles, which used to be a challenge in the first game, are now rather straightforward and super easy to get.
On the bright side, for people who are looking for a challenge, there is a very challenging "endless" mode, but i doubt you will come back to it once you've finished it, since the maps are always the same.
Multiplayer has also been upgraded, but since there are very few players, I've been unable to try it, which will be the case for you too if you don't have friends who own the game.
On the whole, I don't see enough good stuff in this game to alievate the bad, and I can only advise you to stick to the first game. I completed the game, but it wasnt because i enjoyed it, it was only for completion sake and to be sure i wasn't missing something....