Collect all the Rogue bonuses on one Campaign mode file to unlock the Mining Pit multi-player level.
Successfully complete campaign mode on the easy difficulty setting to unlock the GoldenEye multi-player skin.
Successfully complete campaign mode on the hard difficulty setting to unlock the You Only Live Once difficulty setting.
Instead of starting campaign mode on the easy difficulty setting, do it on normal. You will unlock more things and will save a lot of time. If you think you are skilled enough, start on the hard difficulty setting to save even more time and unlock more bonuses.
Use the following trick to walk faster with a bigger weapon such as the Predator, Harpoon, etc. Walk next to the wall and move slightly into it as you walk forwards. You will walk fast, as if you have a smaller gun in your hands. This is useful if you are carrying a Predator MG, Harpoon RL, the Omen XR, the AR4 Commando, or the longbow.
Play the level where you start outside and walk over a bridge that you must knock down. Continue up to the part with the elevator. Once you go in the elevator and then out underground, go all the way to the thing that can press to make that hole digger apear and kill all the enemies. Turn left and you will see a tunnel where the hole digger that goes down then up is found. Go through it to the other side. Once you get there, there should be three enemies coming on your left. Kill them and go to where they were. There should be a dead end on one side and the passage you are supposed to take. While facing the dead end, walk up the right side of the dead end pushing Up/Right. Keep walking up and you should be pushed out of the level. Note: Only certain guns are allowed to pass.
Successfully complete the indicated Virtual Training mission to unlock the corresponding bonus:
Successfully complete the indicated Campaign mission to unlock the corresponding bonus:
