I forgot to include the Bex flie for classic users...
Bex file uploaded:
EDIT: Now included in new link above.
Like the three WAD files, you will load this up in BOOM's Icon Info under the BEX section.
Sorry about that.
BTW, you NEED this file in order for the Red Alien to act correctly. Without it he is very very slow! Also the Barrels will now explode correctly too.