F.E.A.R. 3

===============If you vote negative TELL WHY!!!!!===========

Try to get as many challenges each interval as possible. As you might have noticed challenges restart every chapter. Try to use your special abilities, search for cover make headshots etc. Anything to complete the challenges, also try to fing all pshycic link body's worth 1500 if steal and 1000 when share. Hope this helps a little bit, press the back button to watch your challenge progress. Here are the challenges

Note: Not all challanges are available on both characters, some challenges are only available for Fettel (FE) or Point Man (PM)

Edit: This is the amount of XP needed for Rank 21: 1,250,000 Thanks to munchmagic86.

Soul King: It appears to be that online modes like Soul King are great games to rank in quite fast. I'm getting messages of people who didn't realize it but they ranked in the online modes and as far I understand quite fast!

The Killer: 50 kills in a row 5000 xp

Hard Boiled: 100 kills in a row 10,000xp

Sweet Science: kill 15 enemies with any melee attack 3500

Et tu, Brute?: Kill 3 enemies using special back melee attack 2000

Pop gun: 20 Strader Mk.VII kills: 4500

The Standard: 25 Briggs SMG kills 3000

Assault Pro: 25 G3A3 AR kills 3000

Bullet Hope: 20 Dual MP-970 kills 3500

Butcher: 20 EL-10 CAS kills 4500

Ghost: 15 Shuller LDR50 kills: 4000

Ventilation Expert: 25 S-HV Penetrator kills 5000

Like A Hurricane: 3 Goliath kills 4000

Laser Pointer: 10 Arc Beam kills 5000

Quiet Riot: 10 Riot gear kills 3500

Hot Potato: 10 frag kills 3500

The Shocker: 3 Shock grenade kills 1500

Indecent Exposure: Blind 5 enemies with flash grenades 2500

Slaughter: Kill 20 enemies in a PA or EPA without getting out 5500

What?!: Melee or stomp 5 enemies while in the PA or EPA 2500

Little Brother: FE: 20 Fettle blast kills 10,000

Headhunter: 25 headshots 2500

Executioner: 50 headshots 5000

Menage: 3 kills with 1 explosion 1500

Detonation Expert: 5 kills by shooting explosives 3000

Covert Op: 10 kills from active cover 3000

Cover-Up Artist: 25 kills from active cover 6000

Pitching a Tent: Use cover for a total of 100 seconds 1000

Sir Camp-a-Lot: Use cover for a total of 200 seconds 1500

Nimble killer: 5 kills immediately after mantle techniques 1500

Parkour Deadly: 10 kills immediately after mantle 3000

Slideshot!: 10 kills immediately after slide kick 2500

Invincible: 10 kills in a row without taking damage 5000

Godlike: 20 kills without taking damage 10,000

Gatherer: 15 ammo and nade pickups collected 500

Junk Collector: 30 ammo and nade pickups 1000

Collection Agent: 60 ammo and nade pickups 2000

Death from Below!: 3 kills during 1 last stand 1500

Pick-Up Artist: Perform 3 quick revives on your brother 3000

Helping Hand: 15 Assists 3000

Harm Aid: 30 assists 6000

Supersonic: PM(Point Man): 30 slo mo kills 5000

Hypersonic: PM: 50 slo mo kills 10,000

Perfect Soldier: PM: 3 headshots during 1 slo mo 3000

Slow Your Roll!: PM: 5 kills during 1 slo mo 4500

Highlight Reel: PM: 3 unique melee kills during 1 slo mo 3000

All in the Reflexes!: PM: attain a total of 60 seconds in slo mo time 2500

Nothin or Double: PM: attain a total of 120 seconds in slo mo time 3500

Big Spender: PM: Drain slo mo from full to empty 3x 1500

Borrowed Time: FE (Fettle): 30 total kills while possessing bodies 5000

Rent to OWN!: FE: 50 total kills while possessing bodies 10,000

Showing Off: FE: 5 headshots during 1 possession 3000

Time Efficient: FE: 15 killls during 1 possesion 4500

Enemy Within: FE: 5 suicide kills 1500

Body Snatcher: FE: Attain a total of 120 seconds of possession time 2500

Head Intruder: FE: Attain a total of 240 seconds of possession time 3500

Extended Stay: FE: Remain in a single body or 2 minutes 3000

Damage Resistant: Team: PM absorbs 300 total damage during Shield 5000

Hangman: Team: PM kills 15 suspended enemies 5000

The Crusher: Team: Fettle kills 5 enemies with special slo mo melee 5000

This Isnt so Hard!: Team: Fettle Kills 15 enemies during slo mo 5000

Solo Psychic Link Attained: 1500

TEAM: Shared Psychic Link attained 1000

Mommy!: Collected the Alma doll 5000

Ghost Cowboy: Kill 5 ghost soldiers with the Strader MK.VII 2500

Ghost Hoser: Kill 5 ghost soldiers with the MP-970 2500

Ghost Eraser: Kill 5 ghost soldiers with the CAS 2500

Woah! I know Kung Fu: Kill 3 ghost soldiers with any melee attack 2500

Buster of Ghosts: FE: Kill 5 ghost soldiers with the Fettle Blast 2500

Ghostly Cover-Up: Kill 5 ghost soldiers from active cover 2500

Head Dead Prevention: Kill 5 ghost soldiers with headshots 2500

Nightmare Ninja: Fight back the creep 3 times without getting hurt 2500

Hurt Him: Damage the giant creep 2500

Nightmare Warrior: Damage the giant creep 3 times before he vanishes 2500

Exorcist: PM: Kill 6 ghost soldiers during slo mo 2500

Lucid Dreaming: PM: Kill 3 ghost soldiers during a single slo mo 2500

Possessive: FE: Kill 6 ghost soldiers during possession 2500

Substitute Killer: FE: Kill 2 ghost soldiers during 1 possession 2500

I found a really quick method to level up is by signing in a second controller and playing on "YOU'RE DONE HERE (Soul Survivor)"

Use these settings:
Number of Rounds: 5
Round Duration: 5
Difficulty: Recruit

By just playing normally, by killing the second controller on the rounds you're corrupted and by surviving the whole five minuets and escaping you should get about 30K every 15 minuets. Possibly more points if you get to play as the survivor for 3/5 rounds.