Serious Sam Classics: Revolution

All of these achievements can be unlocked very fast if you follow thse tips:

Start off with "Who needs kills, anyway","Too serious for weapons".

Best to unbind your "jump" button so you wont accidentally jump to start the game off.

Run only with a knife cause remember, you can't kill more then 7 enemies anyway

Save alot and keep looking at your kills. Only place you should kill is after you pick the flamethrower and you enter the room where the scorpion is shooting at you and then enemies spawn behind the wall, knife them all. After that is only Dodge to the max, keep saving alot but before saving keep checking the killcount.

Before you reach the end door "save" and then run through the door to complete the map

This should unlock "Who needs kills, anyway","Jumping is overrated", "Too serious for weapons".

For "Guns are seriously useless" just load your last save that you made before you ran to the end. It should pop up instantly when new map loads.

For "Impossible" just load your last save you made, shoot a rocket once under you and then a bit ahead of you. You should have 13hp, find the scorpion at the exit door and let him shoot you to 1 HP, after that hide behind a wall or kill it and just wait. Within few minutes you should unlock that achievement.

The First map when you spawn go pick up a rocket launched from the high right and rockets from high left.

After that walk on the same wall you used to jump to the rockets but insted jumping to the platform jump on the wall next to it, walk to the end to it and rocket jump over it, continue walking straight to the and you will discover a floor with a bit of different color to it. Shoot it with rockets.

If my description is confusing a bit i added a youtube video of Fyxeon to explain it https://www.youtube.com/watch?v=2HAkiMhx1Ek

After you finished the last fight on Luxor map, do not run straight from the exit, insted after the doors open go directly to left (you see small doors) thats where the Sacred Yard is

At the start pick up the ammo and then just shoot all the trees, once the final tree is down this achievement will unlock

This weapon is found on "Bright Island" map. Before you enter the door head left and just follow the wall on the left, after the 90 degree corner you notice a different color wall. Shoot it and the weapon and achievement is yours

When you spawn go to grab the ammo bag and instantly turn right to run behind the house. Crouch down next to the door (left side of the door) and just wait there, most enemies will come from the right so just shoot them and survive till you get the achievement

To get this achievement use the map "The Pit" in the room where platforms fall down and rise constantly, take out chainsaw and try to rush to the end of the room and hit a save quickly then kill all Marsh-hoppers and die to a platform the save will load, rinse and repeat till you get it.

This is an "AFK" achievement pick the map Sacred Yards from the First Encounter and the room where you go "upside down" once you do that just AFK for 1 hour and then complete the level and the achievement will unlock