No missable achievements (plus 70 unknown)
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Complete any level in single player.
Find a secret under water.
Complete any level in at least 3 player cooperative game.
Complete the South America episode in single player or cooperative.
Complete a deathmatch game with at least 1 frag.
Burn 500 enemies to death.
Complete the Medieval episode in single player or cooperative.
Complete the Persia episode in single player or cooperative.
Get all 3 Rocket launchers in Palenque - Sierra de Chiapas.
Earn at least a bronze medal on any level in single player Survival.
Complete the game.
Kill 300 Kleers with the Cannon.
Frag the same player 10 times during a single round in at least 4 player match.
Win a Deathmatch.
Kill 100 Harpies with the Sniper rifle.
Earn at least a bronze medal on any level in cooperative Survival.
Kill 1000 enemies with the Laser gun.
Make at least 3 kills in one Instant Kill match.
Frag a total of 100 players.
Find all 3 Cannons in Teotihuacan - The City of the Gods.
Perform 4 frags with each being no more than 10 seconds apart from the previous frag in at least 4 player Deathmatch.
Win one Team Deathmatch with at least 2 players on each team.
Complete the game in single player by beating estimated time on each level.
Perform 100 rocket jumps.
Find at least 80 secrets in single player.
Frag the same player 5 times in a row in at least 4 player match.
Win a CTF match with at least 2 players on each team.
Deliver the final blow to Mordekai with the Knife.
Kill 50 Syrian Werebulls with a knife.
Frag a total of 500 players.
Frag 100 different players.
Win a Beast Hunt match on any level.
Win one round in Last Man Standing game with at least 4 players.
Earn a round for your team in Last Team Standing game with at least 2 players on each team.
Frag a total of 1337 players.
Frag all players in a single frag combo.
Frag 100 players with a knife.
Frag 100 players with a knife from behind.
Frag a total of 1000 players.
Complete the game in single player on serious difficulty.
Complete 100 Deathmatches.
Win one My Burden match with at least 3 players.
Frag 10 players without being killed in at least 4 player Instant Kill match.
Find all secrets in single player.
Win a Team Beast Hunt match on any level with least 2 players on each team.
Frag 100 players in a knife-to-knife fight.
Win 25 CTF matches with at least 2 players on each team.
Complete a Deathmatch with frag limit set to at least 200. (Frag limit must be reached!)
Frag 25 players with a knife while having no more than 10 health left.
Complete The Grand Cathedral level on serious difficulty without dying or loading.
Win 25 1-on-1 Deathmatches.
Score a total of 100 points in CTF matches.
Win 100 deathmatch games.
Accumulate a total of 100,001 enemy kills and frags combined.
Win an at least 4 player Deathmatch by reaching frag limit of at least 25 without dying.
Win a Deathmatch Marathon.
Pick up 100 gold coins in Coin-op Cooperative game.
Win a Beast Hunt match on all game levels.
Complete a Coin-op cooperative game on normal or higher difficulty.
Pick up at least 10 extra life items in Cooperative Coin-op game.
Hold the Burden for at least 10 minutes in My Burden match with at least 3 players.
Win 100 Team Deathmatches with at least 2 players on each team.
Win 100 Instant Kill matches.
Win 1000 Deathmatch games.
Earn gold medals on all Survival levels in single player Survival.
Earn gold medals on all Survival levels in cooperative Survival.
Win a Team Beast Hunt match on all game levels with least 2 players on each team.
Win 100 Last Team Standing matches with at least 2 players on each team.
Win 100 My Burden matches with at least 3 players.
Win 100 Last Man Standing matches with at least 4 players.