Technically they’re “downcyclable”. The materials can be separated and used for other purposes, but they’re not “cycled” back into being another tetrapak.
It’s also a very energy intensive procedure so even if it’s possible to use some of the materials again, it’s by no means as environmentally friendly as products that can be recycled for their purpose. Take for instance glass bottles and aluminium cans, they can both be recycled into glass bottles and aluminium cans.
Some places also reuse glass bottles by cleaning them. This also costs energy, but not as much as grinding it down and heating it to produce new glass.
Aluminium cans are probably the best single use beverage container as of now.
The best one is not to get one in the first place. Reduce, reuse, recycle, reclaim.
Tetrapak is in the “reclaim”.
Carrying a personal reusable water bottle is a good idea, because it reduces the production of singular use containers.
I only played the original. I didn’t really like it at first, thinking that the augmentation and mod stuff was needlessly complicated for this kind of game. Also the graphics weren’t all that great in comparison to other games using the same engine. There were a lot of attention to details in comparison to other games so I gave it a chance. The turning point came after completing the first part of the story and getting hooked. The story really carried the game and touches on some interesting topics.
A game with a similar feel would be Omikron: The Nomad Soul. It was released the year before Deus Ex, has worse controls and graphics, but the story and setting is somewhat similar.