- Estimated achievement difficulty: 5/10 [Achievement Difficulty Rating]
- Solo: 3 
- Solo or Co-Op: 44 
- Versus: 3 
- Co-Op Only: 5 
- Approximate time to 1000: 55-65 hours [Estimated Time to 100%]
- Minimum number of playthroughs needed: 1 + 2 partial
- Missable achievements: No
- Does difficulty affect Achievements? Yes
- Unobtainable achievements: No
- Extra equipment needed?: No
"Let us take you beyond the veil of the gothic-noir world of the Van Helsing games, straight into the timeless depths of the twisted otherworld. There is a chain of strongholds in the mists that were once built to keep the horrors of the void at bay. And now these monsters are returning to conquer and kill: only you can stop them before they break through to the everyday world of Borgovia. Choose your hero and defend the Silent Forts: use, rebuild and improve those ancient traps and magical machines."
This game took the Tower Defense mini-game present in the existing Incredible Adventures of Van Helsing games, and created an entire full game out of it. It's a unique mix of ARPG and TD, using traps and your own personal skills to defend portals from attacking monsters.
Step 1: Choose a Main Character
You can choose from a Mercenary (warrior), Marksman (ranger), and Sorceress (mage). The Mercenary is by far the best character, IMO. You lose points on your portal if your character dies, so his increased health pool and survivability is important in that regard. He can also attack huge groups of enemies at once with his sweeping attacks, and has some of the best skills in the game. You'll be spending a LOT of time with one character, and only a couple hours with each of the other two, so choose something you'll enjoy, but do bear in mind how good the Mercenary is in terms of playing solo.
Step 2: Campaign up to Tier 4
I would suggest tackling the campaign in sequence up to Tier 4. There are 13 total levels, and four different tiers of difficulty to play them on. So this means you'll play all 13 levels three times in a row to beat Tier 1, 2, and 3. This will level you quite a bit and get you ready for the other game modes. You don't need to get three stars on any of these difficulties, so just complete them and move on. If you can manage to do any side-quests, that will help make your character and traps stronger, but don't worry too much about those either.
Step 3: Scenario Mode
Now I would go and try Scenario Mode. You'll need to complete all 13 levels in this mode as well, so do that first. There are some difficult challenges tied to this mode as well, most notably beating a level with all the modifiers on, without your character dying. You'll definitely need to come back to that one later, but for now get as much done in this mode as you can for some good experience and equipment.
Step 4: Endless Mode
Endless mode is exactly as it sounds: increasingly difficult waves of enemies on a map, until you fail. You will need to complete at least 20 waves consecutively on each level, which is where the bulk of your time with the game will be spent, as well as most of the experience toward level 100. There are a few specific requirements for this mode (don't use teleports, use only tower or ground traps, etc) so pay attention to those as you go through each level. Try to get them done on the first few levels so you don't restrict yourself later, or just replay the first level later.
Step 5: Campaign Tier 4
Now come back to the campaign since you'll be Level 100 now you'll easily be able to get three stars on each level. If you're somehow still struggling, find a co-op partner to help and split up to patrol the different sides of each map.
Step 6: Versus and Co-Op
There are a few achievements tied to each of the Versus and Co-op modes. The big one in co-op is finishing Wave 30 in Endless. You'll need at least one person at Level 100, and ideally the second person will be higher level as well to be useful. I was lucky enough to have someone help me with this when I was still low level and he rocked it, which not only got me the achievement but boosted me a good 40 levels. In Versus, they are all fairly straightforward, though winning 20 matches will be annoying unless you have a friend to dump games to you as few people will be playing that.
Step 7: Map Editor
For the 250 DLC Gamerscore, you simply need to create a map in the editor that has a strength of 25,000 with a custom monster, eight portals, and six waves. Test it, then save it, and play it in co-op. It take a few minutes at most so long as you have a co-op partner ready to go. Some of the easiest Gamerscore you can get, especially as an entire DLC pack.
[XBA would like to thank The Pants Party for this Roadmap]