In Soulkeep, the most important thing you learn quickly is to experiment with all towers. You can't just rely on one tower and that's it. Each tower has a specific playstyle, and not always what looks good actually works in practice.
For example, I started using a tower called Tarantula Loom, and I was really excited about it. It looked strange and I felt it would do a good job. But honestly, it didn't perform as well as I expected. Its attacks were slow, and its impact on Fiends wasn't as strong as I'd hoped, so I decided to switch.
I then tried Charnel Pit, and it was really powerful, but its main problem was that it consumed a lot of mana. If you don't have a lot of mana, this tower will be more of a burden than a benefit. I constantly had to wait for my mana to replenish before I could use it effectively which led to me losing several rounds.
In the end, I decided to take a step back and focus on another tower called Card Sharp and that really surprised me. This tower has a very good Fire Rate of 1.2 meaning it attacks quickly. It also has a Magic Attack of 135, which is a very good number for this category. More importantly, its Range is around 235 meaning it can attack from afar and control a large area of the map.
What I also liked about Card Sharp is its balance: it doesn't consume a lot of mana, isn't slow, or isn't weak. I felt it was the right tower for this stage of the game, and it allowed me to regain control of waves without worrying about running out of resources.
A piece of advice for anyone playing Soulkeep: try each tower, don't judge it the first time, and always look for a balance between power, speed, and resource consumption. For me, Card Sharp was the right formula.
