Duke Nukem 3D

Easy way to have this :
Go on 1 on 1 with a friend on stadium. Just kill yourself with pipe bombs and rocket launcher during 10 min (around 70 Kills) and you will have the three achievements in 1h30 for both players.

I found "Movie Set" to be the easiest level to boost for the achievement.
Go into a 1 vs 1 match, making sure that is the level being played.
2 Pipe bomb spawns exist side by side near a "Stage 17B" Sign

You will have unlimited time to find a pipe bomb, and kill yourself. Or kill your partner.

Dukematch 500 Kills Steps to Success:

1. Start up a ranked match of free-for-all or one-on-one depending on how many players are going for this. (Up to 4)

2. Meet up in the lobby. This is fairly easy considering almost nobody plays this game.

3. You will probably get Hollywood Holocaust as your first map. Play through this map and any others till you get to Duke Burger.

4. You want Duke Burger because it has NO time limit.

5. In game you are going to hunt for explosives and blow yourself up. This counts as kills. Don't kill other players (yet) because this robs them of kills.

6. Duke Burger has explosives in these locations:
-a. Pipe Bombs by the low wall near the spinning Duke sign.
-b. Pipe Bomb in the food dispenser behind the counter.
-c. Rocket Launcher in the rear most bathroom.
-d. Laser Trip Bombs on the "Humane Society" desk.
-e. Devastator in the backroom meat grinder.
-f. The meat grinder in the back is great for suicides as well.

7. Whoever has the key cards needs to open all applicable doors to make travel through the level easier.

8. Run to the nearest method of death and 86 yourself.

If anyone finishes before anyone else does have them run to the Pipe Bombs outside so they can contribute to everyone else's kill count.

This method took me and two other people a little over 2 hours.

(Also make sure you click on the drive thru speaker at least once. Great Beavis & Butthead reference there.)

Roughly takes 3-4hours to get using this method.

Duke Burger 1v1, go behind the front counter activate the barrier thinghy which reduces your health and kill yourself a suicide is counted as a kill. But i think suicides must be done in one match. also when you spawn if you spawn near laser mines/pipe bomb grab em and kill yourself.

Play a Ranked Deathmatch, One on One game on the map Duke Burger. This map has an unlimited time limit.

Head inside the building and behind the counter. Activate the switch next to the force field to disable it. Now head through the kitchen and use the Red Keycard on the wall. This opens up the Meat Disposal area. In this area, there are two crushers next to a conveyor belt. Simply jump and crouch (with Y) to suicide with a 'Squish!'

Using this method, you can earn the achievement in 1 and a half to 2 hours. The good thing about this strategy is you don't have to run around the map aimlessly looking for explosive weapons to spawn.

Note: Click in the right analog stick to activate Run Mode. This will speed up the process.

Please comment if you vote negatively. I will edit my solution to make it better.

If you're boosting "alone" do the following. Have one Xbox host the game on the level Movie Set. Join in on the other and walk around the level for a while and you'll realize that there are lots of explosives everywhere, which allow you to constantly blow yourself up in less than ten seconds. Once you figure out the map, you'll be playing more or less like this:


From then on, it should take a little over an hour to get this achievement, as well as

and


One extra tip I can give is regarding the weapon drops. Sometimes when you die, you'll drop an RPG, or a "live" pipebomb. This RPG can be picked up and dropped multiple times before disappearing, so I'd advise you to grab it and move away from the spawn so you won't waste the dropped one while the spawner is recycling. I also recommend exploding yourself with pipebombs exactly as I do in the video. Throw them in the corner, then walk towards them holding the trigger. You should be able to off yourself with just one explosion, which is faster than two, but if you respawn near to those pipebombs, sometimes you'll trigger the live drop and die again, scoring an extra point. I've had it happen in a way that I died, respawned in the same place and died again, then respawned at the other pipebomb spawn and died because I had left one there before, so three points in one second. These will blow up if you look at them and/or approach them, so I tried to avoid going to the pipebombs unless all other weapons were depleted.

Keep in mind that this also won't work with two players, unless you're both meeting at the same spot to use up explosions. I only recommend this if you're doing it by yourself, or with a friend who's AFK or something. If you're boosting with a friend who's also after the achievement, Stadium is probably the best level to do it.