Half-Life: Visitors is a very difficulty mod and there aren't a lot of glitches, but there are some tricks you can do to save time.

Name of chapter: Visit Black Mesa Security system failed Detours Breedings Black conspiracy Illusion or reality Mankind strikes back Final obstacles

1. Try to preserve your health as much as possible because there aren't many medkits.

2. The jumping speed is capped to 544ups.

3. There are 24 maps with the "vis" prefix.

The first map is intro. The second map is intro with the beginning of the game (so you can start with map vis02); there's a 52 second difference between the end of the loading and the moment when you can control the character.

4. On map vis05 you can jump off of the train to skip the opening of the train. ()

5. On map vis05 don't get too close to the door (you can be blocked by the loading of vis06)

6. You must take the crowbar. You can't bypass the table.

7. On map vis09 you can bypass the level with the box in wood. ()

8. You can bypass the Bullsquids (with damage, you just have to jump) ()

9. On map vis10 you can bypass the box crap ()

10. On map vis10 you can bypass the map with a jump onto the houndeye ()

11. On map vis11 you can bypass the map. When the door elevator open, jump on the headcrabs. You can use them like stairs to reach the top. After that, don't forget to take the shotgun. ()

12. On map vis12 you have to put the barrel under the door to open it. You can skip the back by slowly moving the barrel onto the trigger. ()

13. On map vis12 don't forget the tripmine! ()

14. On map vis13 place the tripmine on the left wall, use the barnacle to get up and try to get on top of the zombie. With that you can jump on the tripmine, you explode the glass and with that, you can join the scientist. ()

15. On map vis16 you can skip the explosion with a jump onto the box ()

16. On map vis17 you have to stick to the wall on the left (to bypass the zombie)

17. On map vis17 you have to open the door and wait for the teleporter () 17.1) You can bypass the xen world in 5 seconds with a good jump ()

18. The sniper shoots straight, you don't have to scope in (if you want)

19. On map vis19 it's a little tricky to bypass the enemies ()

20. On map vis20 you can bypass a part of the game, you just have to open the door for the elevator and quickly go back to the room. The elevator will go down and you can go on it to access the vent. ()

21. At the power generator, you just have to use the 3rd and last buttons. ()

22. You can explode the box with a grenade ()

23. You can block the door with the houndeye. You have to kill the houndeye when he is in the doorway (). With that you can win some time ().

24. You can activate the door behind the wall (trigger bug) ()

25. In the chillout area, if you have a lot of health you can pass through the electricity ()

26. In the meeting room, you just have to pass the trigger to open the door of the garage ()

27. You can bypass the 2 enemies at the big door with a good jump (sometimes they come anyway, just kill them) ()

28. If you don't have a lot of health at the end, you can play it safe in the building. ()

29. You need 7 rockets to destroy the helicopter

30. The timer stops when the helicopter explodes.

Thanks to Mopi for his run and all the strats found!