Code:

---

function load_lev_2()
{
  freeze_mode = 1;
  load_level("level2.wmb");
  wait(3);
  freeze_mode = 0;
}

function lev_2_event()
{
  if(event_type == event_impact || event_type == event_entity)
  { 
    if(you == player)
    {
      load_lev_2();
    }
  }
}

action spike_1
{
  my.skill1 = 0; //used as animation counter

  my.enable_impact = on;
  my.event_entity = on;
  my.event = lev_2_event;

  while(me)
  {
    my.skill1 += 5 * time;
    my.skill1 %= 100;
    ent_animate(me,"spikeup",my.skill1,anm_cycle);
  
    wait(1);
  }
}

---

Oh you should change the names of your animations though.
Remove the space between the frame name and the number.
like:
spikeup1
or spikeup01