Intrusion 2 is a sci-fi sidescrolling 2D shooter/platform with progressive difficulty and a surprisingly good mechanical (mecha) design for bosses and vehicles.
It shares a lot of elements from Gunstar Heroes or other games from Treasure soft.(with the exception of combining weapons) for the intense action and creativity with the environment and boss encounters which are few, but hellish.
Could be enjoyed with a gamepad, in that case it uses the 2nd lever to command the shooting direction.
Otherwise it's done with the mouse.
On the net there're a lot of quoting Metal Slug as similar to this game.
Mostly wrong, the game plays very differently from the almost carefree action of the Neo Geo serie, don't get this game right away thinking it's M.S., accept that's different or you'll get a wrong opinion and get disappointed.
This is a GREAT and original game not a clone of anything.
In I2 the use of vehicles like mechs is possible, but only for few occasions, the rest of the action relies on this man/cyborg and the arsenal of weapons found during the mission.
There're no power ups, only ammo available from crates or weapons dropped by enemies and health capsules of various refill capacity.
No lives, only a health bar and free re-trials from checkpoints.
It's not divided in stages, anyway it's possible to try several times portions of the game using checkpoints or/and loading from the pause menu.
It's possible on a few situations to ride/use the following:
A giant wolf
The controls are not so easy to master, especially it requires a lot of practice dodging while shooting. It's available the remapping option and regardless its limit, helps many different playstyles.
It's not a senseless action what this game gives: it's a challenge. In some parts of the game there's a slight difficult peak if no ammo has been saved previously. And the unique in-game physics it's a constant part of both trouble and an additional weapon for the player: while a bit strange or awkward used correctly you could use boulders, crates, even dropped weapons to kill enemies. And not only using the Grapple Mech, since each different weapon has has a different knockback power.
Great mecha design, bosses are unforgettable (and unforgiving), wonderful backgrounds. Soldiers and wolfs are affected by the physics so animation seems strange and not quite natural.
If played without interruptions is quite clear that the "intrusion" in enemy territory is a wonder spawned from an action movie. Looking on some sequences is far from being without sense.
It's a shame that even if it's structured as a single mission no hints are given on who's and why the main protagonist have to battle his way to the final boss. There's an android in the game, maybe the main chara is a cyborg? Only pure personal speculation.
Maybe the worst part. A bit repetitive even for the techno-addicted, anyway works well with the hardboiled action of some parts of the game.
For the low price this game offers a lot of challenge, and some replayability for that reason. It's worth for the ending boss encounter alone.
One of the worst for difficult and best for what it does/looks like/challenge.
Surely would love a Intrusion 3 for more mechs and crazy bosses.