I have never been so good at scripting because I think its hard to understand, Im making like a survival map, and I need some help :)

First Script:
When the player touch a trigger volumes a HUD message will appear saying "Press E to start the fight" Then the AI encounters spanw and magically see and follow the player, and also all the sound.sceneries stop.

Second Script: When a player touch or walk over a Trigger Volume a HUD will appear saying: "Press E to activate easter eggs" And then, scenery and decal objects will appear through the map.

Thank you :3

I don't know much about scripting, but you can try posting here .

Having a message show up via trigger volume is pretty pointless. Why not just place a switch there, and make use of that?..

Anyways, if you really want to use a trigger volume, create a cinematic_title with the "Press E to blah blah", work on getting it aligned exactly where you want it, with the correct colors, etc.

(global boolean progress false)
(script continuous script1
(if progress
 (ai_magically_see_players <ai>)
 (begin
  (sleep_until (volume_test_objects <trigger_volume> (players)) 15)
  (cinematic_set_title <cutscene_title>)
  (if (player_action_test_action)
   (begin
    (player_action_test_reset)
    (set progress true)
    (ai_place <ai>)
    (object_destroy_containing <string>)
    (ai_follow_target_players <ai>)
   )
  )
 )
)
(sleep 15)
)

Decals themselves, you can't control. You could create an effect that creates the decals, but not the decals themselves.

(script continuous script2
(sleep_until (volume_test_objects <trigger_volume> (players)) 15)
(cinematic_set_title <cutscene_title>)
(if (player_action_test_action)
 (begin
  (player_action_test_reset)
  (object_create_anew_containing <string>)
  (sleep -1)
 )
)
(sleep 15)
)

But ya... it really would work better with switches, since if someone presses the action key right before entering the volume, this will still catch it. A switch, you dont even need to worry about such foolish stuff like imitating the 'press e', and then just let them walk up and activate the switch.