All three of these Ascension achievements can be easily obtained using admin commands.You will need to be the on The Island map to get these.
Simply load into single player, then open the admin command window by pressing
to pause and then pressing
, then enter the following codes (remember to hit the Admin Command button next to the box to actually submit the code):
cheat playercommand Ascend1
cheat playercommand Ascend2
cheat playercommand Ascend3
1 is for gamma, 2 is for beta and 3 is for alpha
After that you will have to pick your survivor again and respawn, you will not lose any of your stuff but you will not be able to spawn at one of your beds for some reason? Not sure if that's intentional or not but just a word of warning.
Note: The command is case sensitive so make sure you have a capital A on Ascend or it won't work. Thanks to TuKraZe for pointing this out.