ummm, well. MOHPA is kinda boring. simple.
I would call it 'Bloatware'
Cutscenes are fully patriotic, Americans rock, Japanese are little bastards. It plays like Serious Sam. You go along the path and hit a large group of enemies. Kill em all and go on just to, you name it, meet the next big group you kill again etc...
Multiplayer is even worse.
Someone who plays Call of Duty TDM knows it got a bad spawn system. One team always gets pinned down in one place with litte chance to get away. Its even worse in MOHPA. In TDM and DM most of the time enemies you killed respawn
right behind you. When they have killed you guess where you will respawn

Also the weapons are totally imbalanced. Every f*ckin guy takes the lame 50 shot SMG. Not spray and pray but rather spray and rule. If you're up with a rifle for a challenge your chanceless. Even if you rifle them in the head you only incapacited them, meaning the opposing medic can revive them and you get no kill.
But why dont you rent it and judge for yourself?