The Chronicles of Riddick: Assault on Dark Athena

Finish the game on hard then you can reply last checkpoint on normal. This will not work for finishing on normal then doing last level on hard. ONLY finishing on hard then last checkpoint on normal

This game is very much not easy. Even then game's easy mode will provide more than enough challenge for casual gamers. As such, normal mode will likely even prove difficult at times for even advanced gamers.

There are several tips that can greatly help:

* Know which weapon is for which job. You can't hold all that much ammo, so it is important to use the right gun for the right situation. The shotgun is for close range gun battles against enemies on foot. The pistol is for use against stationary enemies you can guarantee headshots on. The assault rifle is for longer range engagements where there isn't enough cover for you to close the gap between you and the enemy. Melee weapons are used when you are wanting to keep quite and get stealth kills.

* When it comes to melee, try to stick with stealth kills as much as possible. It isn't always possible, but it will be helpful in the long run. When it comes to melee weaponry, always stick with the shiv whenever you can. Fists/Knuckledusters don't cause much damage and the club is simply too slow and unwieldy. During face to face melee combat, the AI often will fall to a tactic where you backpedal for a bit, then charge straight in and attack then repeating.

* When trying to be sneaky, shoot out the lights in the area. This only helps after you get the eyeshine, but gives you a great advantage so long as the enemy doesn't decide to use a flashlight. This does alert the enemy to your presence, but they shouldn't be able to track you unless they saw you fire the shot.

* There is a segment where you can purchase a tranc gun for 30 credits. Do it. During this segment it will be the only ranged weapon you have access to. This gun can only affect lights, except reinforced fixtures, and on foot enemies. It has no affect on Riot Guards. When hitting one of the guards, if you do not run up and finish them, they will stand back up about 15 seconds later and be none the wiser. Also note that this gun has unlimited ammo but takes a few seconds before it can be fired again.

* Note that during the heavy armor segments, these bots have a healing ability as well. The Riot Guards healing is pretty weak, possibly leading to you not even noticing it helping. the bot you get to pilot at the end of the game has a substantially stronger healing ability fully restoring its hull strength in a few dozen seconds.

i followed a pc walkthrough he also shows where to get all the nano cartridges and smokes.
playlist url: http://www.youtube.com/view_play_list?p=539944C44D458319