Play an Objectives mission online for the first time.
Go to Multiplayer > Find Game > and choose a Map Objective one. Finish the game to get this easy trophy.
Reach commando level 5.
See CRASH COMMANDO trophy at the very bottom.
Host games with a combined session playtime of 1 hour.
Go Multiplayer > Create Game and set it too one hour and just leave it or play it to rank up.
Destroy 20 control panels.
See HACKER trophy.
Upload 20 blocks of data.
In an online Objectives mission, when attacking, you will either have to destroy control panels or upload data. When destroying control panels, go up to one and click
to plant a bomb. Defend the bomb from defenders trying to defuse it to blow it up. Blow up 20 to get the Demolition Expert trophy. Another option when attacking is you have to download and then re-upload data. Go to the download terminal and download it then get back to your base and upload it. Do this 20 times to get the hacker trophy. Sometimes, and brilliantly, everyone else will leave, meaning it's just you. Switch teams so your attacking using the pause menu and blow/upload away!
Get 20 kills with each of the six primary weapons.
With each weapon get 20 kills. By pausing and going Player Profile you can see your kills with each (well, up to 50).
Play a complete game on every map online.
Go create game, turn on bots and set the maps to random standard maps. Play all four then create a game using the random showdown maps and again play all four to get the trophy!
Reach commando level 15.
See CRASH COMMANDO trophy
BOOT CAMP BEAST
Complete all Grunt and Jarhead Boot Camp missions with a Commando Medal score.
Basically, you have to do each mission and end with a score over 1,000. Very simple.
CRASH AND CONQUER
Win 20 online games
Create a game with bots set to easy and 5 points to win and just make sure you win! x20.
SURVIVAL OF THE FITTEST
Have all three survival bonuses activated at the same time in an online game 10 times
On the down arrow key in the bottom left there is a bar, it will fill up very gradually over time but getting kills really boosts it up. When the bar gets full you can choose a power up. To get this trophy you have to have all three power ups activated 10 times (not in one match). So set up a game with bots to easy and a big score limit and get easy kills (eg. run them over in a jeep) and when you have got all three, commit suicide by clicking select and do it all again another 9 times!
Reach commando level 25
You get XP by mainly kills so set up a game with easy bots, a big score limit, and on the cave. Get on the side with the jeep on the right and just mow them down for very easy kills. Also when it appears get the plasma beam gun (above the jeep, slightly to the left) and use the rocket launcher hut in the middle of the map.