1. Make sure you've already exited the starting elevator
2. Open command console (enable it in the options menu if you have not already).
3. Type in "mp_respawn_on_death_t 1" so if any T player dies, they respawn.
4. Type in, if you want some teammates for single player, "bot_add_t" (the max ammount on the team is 16).

Notes:
- Sometimes the respawn command turns off, how you know is when your team mates stop spawning. Just type in "mp_re" and it will do a quick guess for you and just simply use the arrow keys to scroll to the said command.
- To start the mission with bots, add them after pressing the start button.

Although it breaks the goal of this map, I think it helps make this map playable for a wider skill audience, friendlier to single players, and to people like me where in some cases we are technologically restricted to slow internet.

I hope that you can have fun with this info!